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T49.5

T49.5: Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations

Non-billable headerICD-10-CM

T49.5 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations. 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

Other codes that can never be billed with T49.5

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 T49.5

1 child code. Green means billable.

Other codes under T49

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.