All ICD10 Codes

T49

Non-Billable
ChapterS00–T88
Rankcategory
Official Description

Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs

Use a more specific code (0 billable, 10 non-billable)
T49.0Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugshas subcodesT49.1Poisoning by, adverse effect of and underdosing of antipruriticshas subcodesT49.2Poisoning by, adverse effect of and underdosing of local astringents and local detergentshas subcodesT49.3Poisoning by, adverse effect of and underdosing of emollients, demulcents and protectantshas subcodesT49.4Poisoning by, adverse effect of and underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparationshas subcodesT49.5Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparationshas subcodesT49.6Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparationshas subcodesT49.7Poisoning by, adverse effect of and underdosing of dental drugs, topically appliedhas subcodesT49.8Poisoning by, adverse effect of and underdosing of other topical agentshas subcodesT49.9Poisoning by, adverse effect of and underdosing of unspecified topical agenthas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

CH19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)

T36-T50 Parent Instructions

Includes
  • 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.)
  • abuse and dependence of psychoactive substances (F10-F19)
  • abuse of non-dependence-producing substances (F55.-)
  • immunodeficiency due to drugs (D84.821)
  • drug reaction and poisoning affecting newborn (P00-P96)
  • pathological drug intoxication (inebriation) (F10-F19)
Code First
  • , for adverse effects, the nature of the adverse effect, such as:
  • adverse effect NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)
Use Additional Code
  • 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-)

Instructional Notes

Includes
  • poisoning by, adverse effect of and underdosing of glucocorticoids, topically used

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T36-T50Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
T49Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugsNot billable
T49.0Poisoning by, adverse effect of and underdosing of local antifungal, anti-infective and anti-inflammatory drugsSubcodes
T49.1Poisoning by, adverse effect of and underdosing of antipruriticsSubcodes
T49.2Poisoning by, adverse effect of and underdosing of local astringents and local detergentsSubcodes
T49.3Poisoning by, adverse effect of and underdosing of emollients, demulcents and protectantsSubcodes
T49.4Poisoning by, adverse effect of and underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparationsSubcodes
T49.5Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparationsSubcodes
T49.6Poisoning by, adverse effect of and underdosing of otorhinolaryngological drugs and preparationsSubcodes
T49.7Poisoning by, adverse effect of and underdosing of dental drugs, topically appliedSubcodes
T49.8Poisoning by, adverse effect of and underdosing of other topical agentsSubcodes
T49.9Poisoning by, adverse effect of and underdosing of unspecified topical agentSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T49:

blockT36-T50
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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