T39Not billable, use a more specific code below
Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumatics
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
162 billable codes under T39: none are a CC or MCC; 9 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 T39.
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 T39
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 T39
T39 can't be used on a claim. Pick a billable code below; grey headings group them.
- T39.0Poisoning by, adverse effect of and underdosing of salicylates
- T39.01Poisoning by, adverse effect of and underdosing of aspirin
- T39.011Poisoning by aspirin, accidental (unintentional)
- T39.011APoisoning by aspirin, accidental (unintentional), initial encounter
- T39.011DPoisoning by aspirin, accidental (unintentional), subsequent encounter
- T39.011SPoisoning by aspirin, accidental (unintentional), sequela
- T39.012Poisoning by aspirin, intentional self-harm
- T39.012APoisoning by aspirin, intentional self-harm, initial encounter
- T39.012DPoisoning by aspirin, intentional self-harm, subsequent encounter
- T39.012SPoisoning by aspirin, intentional self-harm, sequela
- T39.013Poisoning by aspirin, assault
- T39.013APoisoning by aspirin, assault, initial encounter
- T39.013DPoisoning by aspirin, assault, subsequent encounter
- T39.013SPoisoning by aspirin, assault, sequela
- T39.014Poisoning by aspirin, undetermined
- T39.014APoisoning by aspirin, undetermined, initial encounter
- T39.014DPoisoning by aspirin, undetermined, subsequent encounter
- T39.014SPoisoning by aspirin, undetermined, sequela
- T39.015Adverse effect of aspirin
- T39.015AAdverse effect of aspirin, initial encounter
- T39.015DAdverse effect of aspirin, subsequent encounter
- T39.015SAdverse effect of aspirin, sequela
- T39.016Underdosing of aspirin
- T39.016AUnderdosing of aspirin, initial encounter
- T39.016DUnderdosing of aspirin, subsequent encounter
- T39.016SUnderdosing of aspirin, sequela
- T39.09Poisoning by, adverse effect of and underdosing of other salicylates
- T39.091Poisoning by salicylates, accidental (unintentional)
- T39.091APoisoning by salicylates, accidental (unintentional), initial encounter
- T39.091DPoisoning by salicylates, accidental (unintentional), subsequent encounter
- T39.091SPoisoning by salicylates, accidental (unintentional), sequela
- T39.092Poisoning by salicylates, intentional self-harm
- T39.092APoisoning by salicylates, intentional self-harm, initial encounter
- T39.092DPoisoning by salicylates, intentional self-harm, subsequent encounter
- T39.092SPoisoning by salicylates, intentional self-harm, sequela
- T39.093Poisoning by salicylates, assault
- T39.093APoisoning by salicylates, assault, initial encounter
- T39.093DPoisoning by salicylates, assault, subsequent encounter
- T39.093SPoisoning by salicylates, assault, sequela
- T39.094Poisoning by salicylates, undetermined
- T39.094APoisoning by salicylates, undetermined, initial encounter
- T39.094DPoisoning by salicylates, undetermined, subsequent encounter
- T39.094SPoisoning by salicylates, undetermined, sequela
- T39.095Adverse effect of salicylates
- T39.095AAdverse effect of salicylates, initial encounter
- T39.095DAdverse effect of salicylates, subsequent encounter
- T39.095SAdverse effect of salicylates, sequela
- T39.096Underdosing of salicylates
- T39.096AUnderdosing of salicylates, initial encounter
- T39.096DUnderdosing of salicylates, subsequent encounter
- T39.096SUnderdosing of salicylates, sequela
- T39.1Poisoning by, adverse effect of and underdosing of 4-Aminophenol derivatives
- T39.1XPoisoning by, adverse effect of and underdosing of 4-Aminophenol derivatives
- T39.1X1Poisoning by 4-Aminophenol derivatives, accidental (unintentional)
- T39.1X1APoisoning by 4-Aminophenol derivatives, accidental (unintentional), initial encounter
- T39.1X1DPoisoning by 4-Aminophenol derivatives, accidental (unintentional), subsequent encounter
- T39.1X1SPoisoning by 4-Aminophenol derivatives, accidental (unintentional), sequela
- T39.1X2Poisoning by 4-Aminophenol derivatives, intentional self-harm
- T39.1X2APoisoning by 4-Aminophenol derivatives, intentional self-harm, initial encounter
- T39.1X2DPoisoning by 4-Aminophenol derivatives, intentional self-harm, subsequent encounter
- T39.1X2SPoisoning by 4-Aminophenol derivatives, intentional self-harm, sequela
- T39.1X3Poisoning by 4-Aminophenol derivatives, assault
- T39.1X3APoisoning by 4-Aminophenol derivatives, assault, initial encounter
- T39.1X3DPoisoning by 4-Aminophenol derivatives, assault, subsequent encounter
- T39.1X3SPoisoning by 4-Aminophenol derivatives, assault, sequela
- T39.1X4Poisoning by 4-Aminophenol derivatives, undetermined
- T39.1X4APoisoning by 4-Aminophenol derivatives, undetermined, initial encounter
- T39.1X4DPoisoning by 4-Aminophenol derivatives, undetermined, subsequent encounter
- T39.1X4SPoisoning by 4-Aminophenol derivatives, undetermined, sequela
- T39.1X5Adverse effect of 4-Aminophenol derivatives
- T39.1X5AAdverse effect of 4-Aminophenol derivatives, initial encounter
- T39.1X5DAdverse effect of 4-Aminophenol derivatives, subsequent encounter
- T39.1X5SAdverse effect of 4-Aminophenol derivatives, sequela
- T39.1X6Underdosing of 4-Aminophenol derivatives
- T39.1X6AUnderdosing of 4-Aminophenol derivatives, initial encounter
- T39.1X6DUnderdosing of 4-Aminophenol derivatives, subsequent encounter
- T39.1X6SUnderdosing of 4-Aminophenol derivatives, sequela
- T39.2Poisoning by, adverse effect of and underdosing of pyrazolone derivatives
- T39.2XPoisoning by, adverse effect of and underdosing of pyrazolone derivatives
- T39.2X1Poisoning by pyrazolone derivatives, accidental (unintentional)
- T39.2X1APoisoning by pyrazolone derivatives, accidental (unintentional), initial encounter
- T39.2X1DPoisoning by pyrazolone derivatives, accidental (unintentional), subsequent encounter
- T39.2X1SPoisoning by pyrazolone derivatives, accidental (unintentional), sequela
- T39.2X2Poisoning by pyrazolone derivatives, intentional self-harm
- T39.2X2APoisoning by pyrazolone derivatives, intentional self-harm, initial encounter
- T39.2X2DPoisoning by pyrazolone derivatives, intentional self-harm, subsequent encounter
- T39.2X2SPoisoning by pyrazolone derivatives, intentional self-harm, sequela
- T39.2X3Poisoning by pyrazolone derivatives, assault
- T39.2X3APoisoning by pyrazolone derivatives, assault, initial encounter
- T39.2X3DPoisoning by pyrazolone derivatives, assault, subsequent encounter
- T39.2X3SPoisoning by pyrazolone derivatives, assault, sequela
- T39.2X4Poisoning by pyrazolone derivatives, undetermined
- T39.2X4APoisoning by pyrazolone derivatives, undetermined, initial encounter
- T39.2X4DPoisoning by pyrazolone derivatives, undetermined, subsequent encounter
- T39.2X4SPoisoning by pyrazolone derivatives, undetermined, sequela
- T39.2X5Adverse effect of pyrazolone derivatives
- T39.2X5AAdverse effect of pyrazolone derivatives, initial encounter
- T39.2X5DAdverse effect of pyrazolone derivatives, subsequent encounter
- T39.2X5SAdverse effect of pyrazolone derivatives, sequela
- T39.2X6Underdosing of pyrazolone derivatives
- T39.2X6AUnderdosing of pyrazolone derivatives, initial encounter
- T39.2X6DUnderdosing of pyrazolone derivatives, subsequent encounter
- T39.2X6SUnderdosing of pyrazolone derivatives, sequela
- T39.3Poisoning by, adverse effect of and underdosing of other nonsteroidal anti-inflammatory drugs [NSAID]
- T39.31Poisoning by, adverse effect of and underdosing of propionic acid derivatives
- T39.311Poisoning by propionic acid derivatives, accidental (unintentional)
- T39.311APoisoning by propionic acid derivatives, accidental (unintentional), initial encounter
- T39.311DPoisoning by propionic acid derivatives, accidental (unintentional), subsequent encounter
- T39.311SPoisoning by propionic acid derivatives, accidental (unintentional), sequela
- T39.312Poisoning by propionic acid derivatives, intentional self-harm
- T39.312APoisoning by propionic acid derivatives, intentional self-harm, initial encounter
- T39.312DPoisoning by propionic acid derivatives, intentional self-harm, subsequent encounter
- T39.312SPoisoning by propionic acid derivatives, intentional self-harm, sequela
- T39.313Poisoning by propionic acid derivatives, assault
- T39.313APoisoning by propionic acid derivatives, assault, initial encounter
- T39.313DPoisoning by propionic acid derivatives, assault, subsequent encounter
- T39.313SPoisoning by propionic acid derivatives, assault, sequela
- T39.314Poisoning by propionic acid derivatives, undetermined
- T39.314APoisoning by propionic acid derivatives, undetermined, initial encounter
- T39.314DPoisoning by propionic acid derivatives, undetermined, subsequent encounter
- T39.314SPoisoning by propionic acid derivatives, undetermined, sequela
- T39.315Adverse effect of propionic acid derivatives
- T39.315AAdverse effect of propionic acid derivatives, initial encounter
- T39.315DAdverse effect of propionic acid derivatives, subsequent encounter
- T39.315SAdverse effect of propionic acid derivatives, sequela
- T39.316Underdosing of propionic acid derivatives
- T39.316AUnderdosing of propionic acid derivatives, initial encounter
- T39.316DUnderdosing of propionic acid derivatives, subsequent encounter
- T39.316SUnderdosing of propionic acid derivatives, sequela
- T39.39Poisoning by, adverse effect of and underdosing of other nonsteroidal anti-inflammatory drugs [NSAID]
- T39.391Poisoning by other nonsteroidal anti-inflammatory drugs [NSAID], accidental (unintentional)
- T39.391APoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], accidental (unintentional), initial encounter
- T39.391DPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], accidental (unintentional), subsequent encounter
- T39.391SPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], accidental (unintentional), sequela
- T39.392Poisoning by other nonsteroidal anti-inflammatory drugs [NSAID], intentional self-harm
- T39.392APoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], intentional self-harm, initial encounter
- T39.392DPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], intentional self-harm, subsequent encounter
- T39.392SPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], intentional self-harm, sequela
- T39.393Poisoning by other nonsteroidal anti-inflammatory drugs [NSAID], assault
- T39.393APoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], assault, initial encounter
- T39.393DPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], assault, subsequent encounter
- T39.393SPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], assault, sequela
- T39.394Poisoning by other nonsteroidal anti-inflammatory drugs [NSAID], undetermined
- T39.394APoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], undetermined, initial encounter
- T39.394DPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], undetermined, subsequent encounter
- T39.394SPoisoning by other nonsteroidal anti-inflammatory drugs [NSAID], undetermined, sequela
- T39.395Adverse effect of other nonsteroidal anti-inflammatory drugs [NSAID]
- T39.395AAdverse effect of other nonsteroidal anti-inflammatory drugs [NSAID], initial encounter
- T39.395DAdverse effect of other nonsteroidal anti-inflammatory drugs [NSAID], subsequent encounter
- T39.395SAdverse effect of other nonsteroidal anti-inflammatory drugs [NSAID], sequela
- T39.396Underdosing of other nonsteroidal anti-inflammatory drugs [NSAID]
- T39.396AUnderdosing of other nonsteroidal anti-inflammatory drugs [NSAID], initial encounter
- T39.396DUnderdosing of other nonsteroidal anti-inflammatory drugs [NSAID], subsequent encounter
- T39.396SUnderdosing of other nonsteroidal anti-inflammatory drugs [NSAID], sequela
- T39.4Poisoning by, adverse effect of and underdosing of antirheumatics, not elsewhere classified
- T39.4XPoisoning by, adverse effect of and underdosing of antirheumatics, not elsewhere classified
- T39.4X1Poisoning by antirheumatics, not elsewhere classified, accidental (unintentional)
- T39.4X1APoisoning by antirheumatics, not elsewhere classified, accidental (unintentional), initial encounter
- T39.4X1DPoisoning by antirheumatics, not elsewhere classified, accidental (unintentional), subsequent encounter
- T39.4X1SPoisoning by antirheumatics, not elsewhere classified, accidental (unintentional), sequela
- T39.4X2Poisoning by antirheumatics, not elsewhere classified, intentional self-harm
- T39.4X2APoisoning by antirheumatics, not elsewhere classified, intentional self-harm, initial encounter
- T39.4X2DPoisoning by antirheumatics, not elsewhere classified, intentional self-harm, subsequent encounter
- T39.4X2SPoisoning by antirheumatics, not elsewhere classified, intentional self-harm, sequela
- T39.4X3Poisoning by antirheumatics, not elsewhere classified, assault
- T39.4X3APoisoning by antirheumatics, not elsewhere classified, assault, initial encounter
- T39.4X3DPoisoning by antirheumatics, not elsewhere classified, assault, subsequent encounter
- T39.4X3SPoisoning by antirheumatics, not elsewhere classified, assault, sequela
- T39.4X4Poisoning by antirheumatics, not elsewhere classified, undetermined
- T39.4X4APoisoning by antirheumatics, not elsewhere classified, undetermined, initial encounter
- T39.4X4DPoisoning by antirheumatics, not elsewhere classified, undetermined, subsequent encounter
- T39.4X4SPoisoning by antirheumatics, not elsewhere classified, undetermined, sequela
- T39.4X5Adverse effect of antirheumatics, not elsewhere classified
- T39.4X5AAdverse effect of antirheumatics, not elsewhere classified, initial encounter
- T39.4X5DAdverse effect of antirheumatics, not elsewhere classified, subsequent encounter
- T39.4X5SAdverse effect of antirheumatics, not elsewhere classified, sequela
- T39.4X6Underdosing of antirheumatics, not elsewhere classified
- T39.4X6AUnderdosing of antirheumatics, not elsewhere classified, initial encounter
- T39.4X6DUnderdosing of antirheumatics, not elsewhere classified, subsequent encounter
- T39.4X6SUnderdosing of antirheumatics, not elsewhere classified, sequela
- T39.8Poisoning by, adverse effect of and underdosing of other nonopioid analgesics and antipyretics, not elsewhere classified
- T39.8XPoisoning by, adverse effect of and underdosing of other nonopioid analgesics and antipyretics, not elsewhere classified
- T39.8X1Poisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, accidental (unintentional)
- T39.8X1APoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, accidental (unintentional), initial encounter
- T39.8X1DPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, accidental (unintentional), subsequent encounter
- T39.8X1SPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, accidental (unintentional), sequela
- T39.8X2Poisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, intentional self-harm
- T39.8X2APoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, intentional self-harm, initial encounter
- T39.8X2DPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, intentional self-harm, subsequent encounter
- T39.8X2SPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, intentional self-harm, sequela
- T39.8X3Poisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, assault
- T39.8X3APoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, assault, initial encounter
- T39.8X3DPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, assault, subsequent encounter
- T39.8X3SPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, assault, sequela
- T39.8X4Poisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, undetermined
- T39.8X4APoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, undetermined, initial encounter
- T39.8X4DPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, undetermined, subsequent encounter
- T39.8X4SPoisoning by other nonopioid analgesics and antipyretics, not elsewhere classified, undetermined, sequela
- T39.8X5Adverse effect of other nonopioid analgesics and antipyretics, not elsewhere classified
- T39.8X5AAdverse effect of other nonopioid analgesics and antipyretics, not elsewhere classified, initial encounter
- T39.8X5DAdverse effect of other nonopioid analgesics and antipyretics, not elsewhere classified, subsequent encounter
- T39.8X5SAdverse effect of other nonopioid analgesics and antipyretics, not elsewhere classified, sequela
- T39.8X6Underdosing of other nonopioid analgesics and antipyretics, not elsewhere classified
- T39.8X6AUnderdosing of other nonopioid analgesics and antipyretics, not elsewhere classified, initial encounter
- T39.8X6DUnderdosing of other nonopioid analgesics and antipyretics, not elsewhere classified, subsequent encounter
- T39.8X6SUnderdosing of other nonopioid analgesics and antipyretics, not elsewhere classified, sequela
- T39.9Poisoning by, adverse effect of and underdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic
- T39.91Poisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, accidental (unintentional)
- T39.91XAPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, accidental (unintentional), initial encounter
- T39.91XDPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, accidental (unintentional), subsequent encounter
- T39.91XSPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, accidental (unintentional), sequela
- T39.92Poisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, intentional self-harm
- T39.92XAPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, intentional self-harm, initial encounter
- T39.92XDPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, intentional self-harm, subsequent encounter
- T39.92XSPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, intentional self-harm, sequela
- T39.93Poisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, assault
- T39.93XAPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, assault, initial encounter
- T39.93XDPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, assault, subsequent encounter
- T39.93XSPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, assault, sequela
- T39.94Poisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, undetermined
- T39.94XAPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, undetermined, initial encounter
- T39.94XDPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, undetermined, subsequent encounter
- T39.94XSPoisoning by unspecified nonopioid analgesic, antipyretic and antirheumatic, undetermined, sequela
- T39.95Adverse effect of unspecified nonopioid analgesic, antipyretic and antirheumatic
- T39.95XAAdverse effect of unspecified nonopioid analgesic, antipyretic and antirheumatic, initial encounter
- T39.95XDAdverse effect of unspecified nonopioid analgesic, antipyretic and antirheumatic, subsequent encounter
- T39.95XSAdverse effect of unspecified nonopioid analgesic, antipyretic and antirheumatic, sequela
- T39.96Underdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic
- T39.96XAUnderdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic, initial encounter
- T39.96XDUnderdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic, subsequent encounter
- T39.96XSUnderdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic, sequela
T39 MS-DRGs
As the principal diagnosis, the billable codes under T39 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 (63 of 162 codes)
- DRG 950 Aftercare without CC/MCC (63 of 162 codes)
- DRG 917 Poisoning and Toxic Effects of Drugs with MCC (45 of 162 codes)
- DRG 918 Poisoning and Toxic Effects of Drugs without MCC (45 of 162 codes)
- DRG 922 Other Injury, Poisoning and Toxic Effect Diagnoses with MCC (45 of 162 codes)
- DRG 923 Other Injury, Poisoning and Toxic Effect Diagnoses without MCC (45 of 162 codes)
- DRG 791 Prematurity with Major Problems (9 of 162 codes)
- DRG 793 Full Term Neonate with Major Problems (9 of 162 codes)
- DRG 951 Other Factors Influencing Health Status (9 of 162 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.