T44Not billable, use a more specific code below
Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
In Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50), chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes
198 billable codes under T44: none are a CC or MCC; 11 map to HCC 155 (Major Depression, Moderate or Severe, without Psychosis).An HCC counts toward a Medicare Advantage patient's risk score.
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Instructional notes
Also applies, from Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
These notes sit on T36-T50 and apply to every code under it, including T44.
Includes: conditions that are coded here
- adverse effect of correct substance properly administered
- poisoning by overdose of substance
- poisoning by wrong substance given or taken in error
- underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
Excludes1: not coded here, use a different code
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes2: not included here, code separately if applicable
Code first: code the underlying condition first, then this code
Use additional code: add a second code for this, listed after this one
- code(s) to specify:
- manifestations of poisoning
- underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
- underdosing of medication regimen (Z91.12-, Z91.13-)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
- Section I.C.19.e Adverse Effects, Poisoning, Underdosing and Toxic Effects (page 82), covers T44
For adverse effects, code the effect first, then T36-T50 with character 5. Sequence poisonings (unknown intent coded accidental) and toxic effects (T51-T65) first; underdosing (character 6) is never first-listed.
Other Chapter 19 topics:
- Application of 7th Characters in Chapter 19 (page 77)
- Coding of Injuries (page 78)
- Coding of Traumatic Fractures (page 79)
- Coding of Burns and Corrosions (page 80)
- Adult and child abuse, neglect and other maltreatment (page 85)
- Complications of care (page 85)
All codes under T44
T44 can't be used on a claim. Pick a billable code below; grey headings group them.
- T44.0Poisoning by, adverse effect of and underdosing of anticholinesterase agents
- T44.0XPoisoning by, adverse effect of and underdosing of anticholinesterase agents
- T44.0X1Poisoning by anticholinesterase agents, accidental (unintentional)
- T44.0X1APoisoning by anticholinesterase agents, accidental (unintentional), initial encounter
- T44.0X1DPoisoning by anticholinesterase agents, accidental (unintentional), subsequent encounter
- T44.0X1SPoisoning by anticholinesterase agents, accidental (unintentional), sequela
- T44.0X2Poisoning by anticholinesterase agents, intentional self-harm
- T44.0X2APoisoning by anticholinesterase agents, intentional self-harm, initial encounter
- T44.0X2DPoisoning by anticholinesterase agents, intentional self-harm, subsequent encounter
- T44.0X2SPoisoning by anticholinesterase agents, intentional self-harm, sequela
- T44.0X3Poisoning by anticholinesterase agents, assault
- T44.0X3APoisoning by anticholinesterase agents, assault, initial encounter
- T44.0X3DPoisoning by anticholinesterase agents, assault, subsequent encounter
- T44.0X3SPoisoning by anticholinesterase agents, assault, sequela
- T44.0X4Poisoning by anticholinesterase agents, undetermined
- T44.0X4APoisoning by anticholinesterase agents, undetermined, initial encounter
- T44.0X4DPoisoning by anticholinesterase agents, undetermined, subsequent encounter
- T44.0X4SPoisoning by anticholinesterase agents, undetermined, sequela
- T44.0X5Adverse effect of anticholinesterase agents
- T44.0X5AAdverse effect of anticholinesterase agents, initial encounter
- T44.0X5DAdverse effect of anticholinesterase agents, subsequent encounter
- T44.0X5SAdverse effect of anticholinesterase agents, sequela
- T44.0X6Underdosing of anticholinesterase agents
- T44.0X6AUnderdosing of anticholinesterase agents, initial encounter
- T44.0X6DUnderdosing of anticholinesterase agents, subsequent encounter
- T44.0X6SUnderdosing of anticholinesterase agents, sequela
- T44.1Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]
- T44.1XPoisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]
- T44.1X1Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional)
- T44.1X1APoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), initial encounter
- T44.1X1DPoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), subsequent encounter
- T44.1X1SPoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), sequela
- T44.1X2Poisoning by other parasympathomimetics [cholinergics], intentional self-harm
- T44.1X2APoisoning by other parasympathomimetics [cholinergics], intentional self-harm, initial encounter
- T44.1X2DPoisoning by other parasympathomimetics [cholinergics], intentional self-harm, subsequent encounter
- T44.1X2SPoisoning by other parasympathomimetics [cholinergics], intentional self-harm, sequela
- T44.1X3Poisoning by other parasympathomimetics [cholinergics], assault
- T44.1X3APoisoning by other parasympathomimetics [cholinergics], assault, initial encounter
- T44.1X3DPoisoning by other parasympathomimetics [cholinergics], assault, subsequent encounter
- T44.1X3SPoisoning by other parasympathomimetics [cholinergics], assault, sequela
- T44.1X4Poisoning by other parasympathomimetics [cholinergics], undetermined
- T44.1X4APoisoning by other parasympathomimetics [cholinergics], undetermined, initial encounter
- T44.1X4DPoisoning by other parasympathomimetics [cholinergics], undetermined, subsequent encounter
- T44.1X4SPoisoning by other parasympathomimetics [cholinergics], undetermined, sequela
- T44.1X5Adverse effect of other parasympathomimetics [cholinergics]
- T44.1X5AAdverse effect of other parasympathomimetics [cholinergics], initial encounter
- T44.1X5DAdverse effect of other parasympathomimetics [cholinergics], subsequent encounter
- T44.1X5SAdverse effect of other parasympathomimetics [cholinergics], sequela
- T44.1X6Underdosing of other parasympathomimetics [cholinergics]
- T44.1X6AUnderdosing of other parasympathomimetics [cholinergics], initial encounter
- T44.1X6DUnderdosing of other parasympathomimetics [cholinergics], subsequent encounter
- T44.1X6SUnderdosing of other parasympathomimetics [cholinergics], sequela
- T44.2Poisoning by, adverse effect of and underdosing of ganglionic blocking drugs
- T44.2XPoisoning by, adverse effect of and underdosing of ganglionic blocking drugs
- T44.2X1Poisoning by ganglionic blocking drugs, accidental (unintentional)
- T44.2X1APoisoning by ganglionic blocking drugs, accidental (unintentional), initial encounter
- T44.2X1DPoisoning by ganglionic blocking drugs, accidental (unintentional), subsequent encounter
- T44.2X1SPoisoning by ganglionic blocking drugs, accidental (unintentional), sequela
- T44.2X2Poisoning by ganglionic blocking drugs, intentional self-harm
- T44.2X2APoisoning by ganglionic blocking drugs, intentional self-harm, initial encounter
- T44.2X2DPoisoning by ganglionic blocking drugs, intentional self-harm, subsequent encounter
- T44.2X2SPoisoning by ganglionic blocking drugs, intentional self-harm, sequela
- T44.2X3Poisoning by ganglionic blocking drugs, assault
- T44.2X3APoisoning by ganglionic blocking drugs, assault, initial encounter
- T44.2X3DPoisoning by ganglionic blocking drugs, assault, subsequent encounter
- T44.2X3SPoisoning by ganglionic blocking drugs, assault, sequela
- T44.2X4Poisoning by ganglionic blocking drugs, undetermined
- T44.2X4APoisoning by ganglionic blocking drugs, undetermined, initial encounter
- T44.2X4DPoisoning by ganglionic blocking drugs, undetermined, subsequent encounter
- T44.2X4SPoisoning by ganglionic blocking drugs, undetermined, sequela
- T44.2X5Adverse effect of ganglionic blocking drugs
- T44.2X5AAdverse effect of ganglionic blocking drugs, initial encounter
- T44.2X5DAdverse effect of ganglionic blocking drugs, subsequent encounter
- T44.2X5SAdverse effect of ganglionic blocking drugs, sequela
- T44.2X6Underdosing of ganglionic blocking drugs
- T44.2X6AUnderdosing of ganglionic blocking drugs, initial encounter
- T44.2X6DUnderdosing of ganglionic blocking drugs, subsequent encounter
- T44.2X6SUnderdosing of ganglionic blocking drugs, sequela
- T44.3Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics
- T44.3XPoisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics
- T44.3X1Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional)
- T44.3X1APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), initial encounter
- T44.3X1DPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), subsequent encounter
- T44.3X1SPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), sequela
- T44.3X2Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm
- T44.3X2APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, initial encounter
- T44.3X2DPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, subsequent encounter
- T44.3X2SPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, sequela
- T44.3X3Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault
- T44.3X3APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, initial encounter
- T44.3X3DPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, subsequent encounter
- T44.3X3SPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, sequela
- T44.3X4Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined
- T44.3X4APoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined, initial encounter
- T44.3X4DPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined, subsequent encounter
- T44.3X4SPoisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined, sequela
- T44.3X5Adverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics
- T44.3X5AAdverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, initial encounter
- T44.3X5DAdverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, subsequent encounter
- T44.3X5SAdverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, sequela
- T44.3X6Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics
- T44.3X6AUnderdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, initial encounter
- T44.3X6DUnderdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, subsequent encounter
- T44.3X6SUnderdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, sequela
- T44.4Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonists
- T44.4XPoisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonists
- T44.4X1Poisoning by predominantly alpha-adrenoreceptor agonists, accidental (unintentional)
- T44.4X1APoisoning by predominantly alpha-adrenoreceptor agonists, accidental (unintentional), initial encounter
- T44.4X1DPoisoning by predominantly alpha-adrenoreceptor agonists, accidental (unintentional), subsequent encounter
- T44.4X1SPoisoning by predominantly alpha-adrenoreceptor agonists, accidental (unintentional), sequela
- T44.4X2Poisoning by predominantly alpha-adrenoreceptor agonists, intentional self-harm
- T44.4X2APoisoning by predominantly alpha-adrenoreceptor agonists, intentional self-harm, initial encounter
- T44.4X2DPoisoning by predominantly alpha-adrenoreceptor agonists, intentional self-harm, subsequent encounter
- T44.4X2SPoisoning by predominantly alpha-adrenoreceptor agonists, intentional self-harm, sequela
- T44.4X3Poisoning by predominantly alpha-adrenoreceptor agonists, assault
- T44.4X3APoisoning by predominantly alpha-adrenoreceptor agonists, assault, initial encounter
- T44.4X3DPoisoning by predominantly alpha-adrenoreceptor agonists, assault, subsequent encounter
- T44.4X3SPoisoning by predominantly alpha-adrenoreceptor agonists, assault, sequela
- T44.4X4Poisoning by predominantly alpha-adrenoreceptor agonists, undetermined
- T44.4X4APoisoning by predominantly alpha-adrenoreceptor agonists, undetermined, initial encounter
- T44.4X4DPoisoning by predominantly alpha-adrenoreceptor agonists, undetermined, subsequent encounter
- T44.4X4SPoisoning by predominantly alpha-adrenoreceptor agonists, undetermined, sequela
- T44.4X5Adverse effect of predominantly alpha-adrenoreceptor agonists
- T44.4X5AAdverse effect of predominantly alpha-adrenoreceptor agonists, initial encounter
- T44.4X5DAdverse effect of predominantly alpha-adrenoreceptor agonists, subsequent encounter
- T44.4X5SAdverse effect of predominantly alpha-adrenoreceptor agonists, sequela
- T44.4X6Underdosing of predominantly alpha-adrenoreceptor agonists
- T44.4X6AUnderdosing of predominantly alpha-adrenoreceptor agonists, initial encounter
- T44.4X6DUnderdosing of predominantly alpha-adrenoreceptor agonists, subsequent encounter
- T44.4X6SUnderdosing of predominantly alpha-adrenoreceptor agonists, sequela
- T44.5Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonists
- T44.5XPoisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonists
- T44.5X1Poisoning by predominantly beta-adrenoreceptor agonists, accidental (unintentional)
- T44.5X1APoisoning by predominantly beta-adrenoreceptor agonists, accidental (unintentional), initial encounter
- T44.5X1DPoisoning by predominantly beta-adrenoreceptor agonists, accidental (unintentional), subsequent encounter
- T44.5X1SPoisoning by predominantly beta-adrenoreceptor agonists, accidental (unintentional), sequela
- T44.5X2Poisoning by predominantly beta-adrenoreceptor agonists, intentional self-harm
- T44.5X2APoisoning by predominantly beta-adrenoreceptor agonists, intentional self-harm, initial encounter
- T44.5X2DPoisoning by predominantly beta-adrenoreceptor agonists, intentional self-harm, subsequent encounter
- T44.5X2SPoisoning by predominantly beta-adrenoreceptor agonists, intentional self-harm, sequela
- T44.5X3Poisoning by predominantly beta-adrenoreceptor agonists, assault
- T44.5X3APoisoning by predominantly beta-adrenoreceptor agonists, assault, initial encounter
- T44.5X3DPoisoning by predominantly beta-adrenoreceptor agonists, assault, subsequent encounter
- T44.5X3SPoisoning by predominantly beta-adrenoreceptor agonists, assault, sequela
- T44.5X4Poisoning by predominantly beta-adrenoreceptor agonists, undetermined
- T44.5X4APoisoning by predominantly beta-adrenoreceptor agonists, undetermined, initial encounter
- T44.5X4DPoisoning by predominantly beta-adrenoreceptor agonists, undetermined, subsequent encounter
- T44.5X4SPoisoning by predominantly beta-adrenoreceptor agonists, undetermined, sequela
- T44.5X5Adverse effect of predominantly beta-adrenoreceptor agonists
- T44.5X5AAdverse effect of predominantly beta-adrenoreceptor agonists, initial encounter
- T44.5X5DAdverse effect of predominantly beta-adrenoreceptor agonists, subsequent encounter
- T44.5X5SAdverse effect of predominantly beta-adrenoreceptor agonists, sequela
- T44.5X6Underdosing of predominantly beta-adrenoreceptor agonists
- T44.5X6AUnderdosing of predominantly beta-adrenoreceptor agonists, initial encounter
- T44.5X6DUnderdosing of predominantly beta-adrenoreceptor agonists, subsequent encounter
- T44.5X6SUnderdosing of predominantly beta-adrenoreceptor agonists, sequela
- T44.6Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonists
- T44.6XPoisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonists
- T44.6X1Poisoning by alpha-adrenoreceptor antagonists, accidental (unintentional)
- T44.6X1APoisoning by alpha-adrenoreceptor antagonists, accidental (unintentional), initial encounter
- T44.6X1DPoisoning by alpha-adrenoreceptor antagonists, accidental (unintentional), subsequent encounter
- T44.6X1SPoisoning by alpha-adrenoreceptor antagonists, accidental (unintentional), sequela
- T44.6X2Poisoning by alpha-adrenoreceptor antagonists, intentional self-harm
- T44.6X2APoisoning by alpha-adrenoreceptor antagonists, intentional self-harm, initial encounter
- T44.6X2DPoisoning by alpha-adrenoreceptor antagonists, intentional self-harm, subsequent encounter
- T44.6X2SPoisoning by alpha-adrenoreceptor antagonists, intentional self-harm, sequela
- T44.6X3Poisoning by alpha-adrenoreceptor antagonists, assault
- T44.6X3APoisoning by alpha-adrenoreceptor antagonists, assault, initial encounter
- T44.6X3DPoisoning by alpha-adrenoreceptor antagonists, assault, subsequent encounter
- T44.6X3SPoisoning by alpha-adrenoreceptor antagonists, assault, sequela
- T44.6X4Poisoning by alpha-adrenoreceptor antagonists, undetermined
- T44.6X4APoisoning by alpha-adrenoreceptor antagonists, undetermined, initial encounter
- T44.6X4DPoisoning by alpha-adrenoreceptor antagonists, undetermined, subsequent encounter
- T44.6X4SPoisoning by alpha-adrenoreceptor antagonists, undetermined, sequela
- T44.6X5Adverse effect of alpha-adrenoreceptor antagonists
- T44.6X5AAdverse effect of alpha-adrenoreceptor antagonists, initial encounter
- T44.6X5DAdverse effect of alpha-adrenoreceptor antagonists, subsequent encounter
- T44.6X5SAdverse effect of alpha-adrenoreceptor antagonists, sequela
- T44.6X6Underdosing of alpha-adrenoreceptor antagonists
- T44.6X6AUnderdosing of alpha-adrenoreceptor antagonists, initial encounter
- T44.6X6DUnderdosing of alpha-adrenoreceptor antagonists, subsequent encounter
- T44.6X6SUnderdosing of alpha-adrenoreceptor antagonists, sequela
- T44.7Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists
- T44.7XPoisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists
- T44.7X1Poisoning by beta-adrenoreceptor antagonists, accidental (unintentional)
- T44.7X1APoisoning by beta-adrenoreceptor antagonists, accidental (unintentional), initial encounter
- T44.7X1DPoisoning by beta-adrenoreceptor antagonists, accidental (unintentional), subsequent encounter
- T44.7X1SPoisoning by beta-adrenoreceptor antagonists, accidental (unintentional), sequela
- T44.7X2Poisoning by beta-adrenoreceptor antagonists, intentional self-harm
- T44.7X2APoisoning by beta-adrenoreceptor antagonists, intentional self-harm, initial encounter
- T44.7X2DPoisoning by beta-adrenoreceptor antagonists, intentional self-harm, subsequent encounter
- T44.7X2SPoisoning by beta-adrenoreceptor antagonists, intentional self-harm, sequela
- T44.7X3Poisoning by beta-adrenoreceptor antagonists, assault
- T44.7X3APoisoning by beta-adrenoreceptor antagonists, assault, initial encounter
- T44.7X3DPoisoning by beta-adrenoreceptor antagonists, assault, subsequent encounter
- T44.7X3SPoisoning by beta-adrenoreceptor antagonists, assault, sequela
- T44.7X4Poisoning by beta-adrenoreceptor antagonists, undetermined
- T44.7X4APoisoning by beta-adrenoreceptor antagonists, undetermined, initial encounter
- T44.7X4DPoisoning by beta-adrenoreceptor antagonists, undetermined, subsequent encounter
- T44.7X4SPoisoning by beta-adrenoreceptor antagonists, undetermined, sequela
- T44.7X5Adverse effect of beta-adrenoreceptor antagonists
- T44.7X5AAdverse effect of beta-adrenoreceptor antagonists, initial encounter
- T44.7X5DAdverse effect of beta-adrenoreceptor antagonists, subsequent encounter
- T44.7X5SAdverse effect of beta-adrenoreceptor antagonists, sequela
- T44.7X6Underdosing of beta-adrenoreceptor antagonists
- T44.7X6AUnderdosing of beta-adrenoreceptor antagonists, initial encounter
- T44.7X6DUnderdosing of beta-adrenoreceptor antagonists, subsequent encounter
- T44.7X6SUnderdosing of beta-adrenoreceptor antagonists, sequela
- T44.8Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agents
- T44.8XPoisoning by, adverse effect of and underdosing of centrally-acting and adrenergic- neuron-blocking agents
- T44.8X1Poisoning by centrally-acting and adrenergic-neuron-blocking agents, accidental (unintentional)
- T44.8X1APoisoning by centrally-acting and adrenergic-neuron-blocking agents, accidental (unintentional), initial encounter
- T44.8X1DPoisoning by centrally-acting and adrenergic-neuron-blocking agents, accidental (unintentional), subsequent encounter
- T44.8X1SPoisoning by centrally-acting and adrenergic-neuron-blocking agents, accidental (unintentional), sequela
- T44.8X2Poisoning by centrally-acting and adrenergic-neuron-blocking agents, intentional self-harm
- T44.8X2APoisoning by centrally-acting and adrenergic-neuron-blocking agents, intentional self-harm, initial encounter
- T44.8X2DPoisoning by centrally-acting and adrenergic-neuron-blocking agents, intentional self-harm, subsequent encounter
- T44.8X2SPoisoning by centrally-acting and adrenergic-neuron-blocking agents, intentional self-harm, sequela
- T44.8X3Poisoning by centrally-acting and adrenergic-neuron-blocking agents, assault
- T44.8X3APoisoning by centrally-acting and adrenergic-neuron-blocking agents, assault, initial encounter
- T44.8X3DPoisoning by centrally-acting and adrenergic-neuron-blocking agents, assault, subsequent encounter
- T44.8X3SPoisoning by centrally-acting and adrenergic-neuron-blocking agents, assault, sequela
- T44.8X4Poisoning by centrally-acting and adrenergic-neuron-blocking agents, undetermined
- T44.8X4APoisoning by centrally-acting and adrenergic-neuron-blocking agents, undetermined, initial encounter
- T44.8X4DPoisoning by centrally-acting and adrenergic-neuron-blocking agents, undetermined, subsequent encounter
- T44.8X4SPoisoning by centrally-acting and adrenergic-neuron-blocking agents, undetermined, sequela
- T44.8X5Adverse effect of centrally-acting and adrenergic-neuron-blocking agents
- T44.8X5AAdverse effect of centrally-acting and adrenergic-neuron-blocking agents, initial encounter
- T44.8X5DAdverse effect of centrally-acting and adrenergic-neuron-blocking agents, subsequent encounter
- T44.8X5SAdverse effect of centrally-acting and adrenergic-neuron-blocking agents, sequela
- T44.8X6Underdosing of centrally-acting and adrenergic-neuron-blocking agents
- T44.8X6AUnderdosing of centrally-acting and adrenergic-neuron-blocking agents, initial encounter
- T44.8X6DUnderdosing of centrally-acting and adrenergic-neuron-blocking agents, subsequent encounter
- T44.8X6SUnderdosing of centrally-acting and adrenergic-neuron-blocking agents, sequela
- T44.9Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous system
- T44.90Poisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous system
- T44.901Poisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional)
- T44.901APoisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter
- T44.901DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter
- T44.901SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional), sequela
- T44.902Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm
- T44.902APoisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, initial encounter
- T44.902DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, subsequent encounter
- T44.902SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm, sequela
- T44.903Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault
- T44.903APoisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, initial encounter
- T44.903DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, subsequent encounter
- T44.903SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, assault, sequela
- T44.904Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined
- T44.904APoisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, initial encounter
- T44.904DPoisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, subsequent encounter
- T44.904SPoisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined, sequela
- T44.905Adverse effect of unspecified drugs primarily affecting the autonomic nervous system
- T44.905AAdverse effect of unspecified drugs primarily affecting the autonomic nervous system, initial encounter
- T44.905DAdverse effect of unspecified drugs primarily affecting the autonomic nervous system, subsequent encounter
- T44.905SAdverse effect of unspecified drugs primarily affecting the autonomic nervous system, sequela
- T44.906Underdosing of unspecified drugs primarily affecting the autonomic nervous system
- T44.906AUnderdosing of unspecified drugs primarily affecting the autonomic nervous system, initial encounter
- T44.906DUnderdosing of unspecified drugs primarily affecting the autonomic nervous system, subsequent encounter
- T44.906SUnderdosing of unspecified drugs primarily affecting the autonomic nervous system, sequela
- T44.99Poisoning by, adverse effect of and underdosing of other drugs primarily affecting the autonomic nervous system
- T44.991Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional)
- T44.991APoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter
- T44.991DPoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter
- T44.991SPoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), sequela
- T44.992Poisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm
- T44.992APoisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, initial encounter
- T44.992DPoisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, subsequent encounter
- T44.992SPoisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm, sequela
- T44.993Poisoning by other drug primarily affecting the autonomic nervous system, assault
- T44.993APoisoning by other drug primarily affecting the autonomic nervous system, assault, initial encounter
- T44.993DPoisoning by other drug primarily affecting the autonomic nervous system, assault, subsequent encounter
- T44.993SPoisoning by other drug primarily affecting the autonomic nervous system, assault, sequela
- T44.994Poisoning by other drug primarily affecting the autonomic nervous system, undetermined
- T44.994APoisoning by other drug primarily affecting the autonomic nervous system, undetermined, initial encounter
- T44.994DPoisoning by other drug primarily affecting the autonomic nervous system, undetermined, subsequent encounter
- T44.994SPoisoning by other drug primarily affecting the autonomic nervous system, undetermined, sequela
- T44.995Adverse effect of other drug primarily affecting the autonomic nervous system
- T44.995AAdverse effect of other drug primarily affecting the autonomic nervous system, initial encounter
- T44.995DAdverse effect of other drug primarily affecting the autonomic nervous system, subsequent encounter
- T44.995SAdverse effect of other drug primarily affecting the autonomic nervous system, sequela
- T44.996Underdosing of other drug primarily affecting the autonomic nervous system
- T44.996AUnderdosing of other drug primarily affecting the autonomic nervous system, initial encounter
- T44.996DUnderdosing of other drug primarily affecting the autonomic nervous system, subsequent encounter
- T44.996SUnderdosing of other drug primarily affecting the autonomic nervous system, sequela
T44 MS-DRGs
As the principal diagnosis, the billable codes under T44 group to these 9 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 949 Aftercare with CC/MCC (77 of 198 codes)
- DRG 950 Aftercare without CC/MCC (77 of 198 codes)
- DRG 917 Poisoning and Toxic Effects of Drugs with MCC (55 of 198 codes)
- DRG 918 Poisoning and Toxic Effects of Drugs without MCC (55 of 198 codes)
- DRG 922 Other Injury, Poisoning and Toxic Effect Diagnoses with MCC (55 of 198 codes)
- DRG 923 Other Injury, Poisoning and Toxic Effect Diagnoses without MCC (55 of 198 codes)
- DRG 791 Prematurity with Major Problems (11 of 198 codes)
- DRG 793 Full Term Neonate with Major Problems (11 of 198 codes)
- DRG 951 Other Factors Influencing Health Status (11 of 198 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
Drug Reactions
Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions, such as drug interactions, side effects, and allergies.
Read more about drug reactions on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.