T23.539
T23.539: Corrosion of first degree of unspecified multiple fingers (nail), not including thumb
Non-billable headerICD-10-CM
T23.539 is a non-billable header ICD-10-CM code for corrosion of first degree of unspecified multiple fingers (nail), not including thumb. 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 T23
- 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›finger›multiple sites›first degree
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T23.539
3 child codes. Green means billable.
- T23.539ACorrosion of first degree of unspecified multiple fingers (nail), not including thumb, initial encounter
- T23.539DCorrosion of first degree of unspecified multiple fingers (nail), not including thumb, subsequent encounter
- T23.539SCorrosion of first degree of unspecified multiple fingers (nail), not including thumb, sequela