MCMedicalCodingSoftware
T25.799

T25.799: Corrosion of third degree of multiple sites of unspecified ankle and foot

Non-billable headerICD-10-CMunspecified

T25.799 is a non-billable header ICD-10-CM code for corrosion of third degree of multiple sites of unspecified ankle and foot. 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 T25

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

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

Alphabetic index entries that lead here

  • Corrosion›lower›limb›multiple sites, except ankle and foot›ankle and foot›third degree

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead T25.799

3 child codes. Green means billable.

Other codes under T25.79

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.