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T49

T49: Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs

Non-billable headerICD-10-CM

T49 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugs. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.

This code requires a 7th character

The appropriate 7th character is to be added to each code from category T49

A
initial encounter
D
subsequent encounter
S
sequela

Includes

Conditions this code covers.

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

Other codes that can never be billed with T49

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • T36Poisoning by, adverse effect of and underdosing of systemic antibiotics
  • T37Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics
  • T38.0Poisoning by, adverse effect of and underdosing of glucocorticoids and synthetic analogues

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T49

10 child codes. Green means billable.

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.