T21.47
T21.47: Corrosion of unspecified degree of female genital region
Non-billable headerICD-10-CM
T21.47 is a non-billable header ICD-10-CM code for corrosion of unspecified degree of female genital region. 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 T21
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2: not included here, but may coexist
The excluded condition is not part of this code, but a patient can have both. You may code both.
- corrosion of vagina (T28.8)
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Corrosion of unspecified degree of labium (majus) (minus)
- Corrosion of unspecified degree of perineum
- Corrosion of unspecified degree of vulva
Excludes2 inherited from the categories above T21.47
Not part of this code, but both may be coded when both are present.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Alphabetic index entries that lead here
- Corrosion›genital organs›external›female
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T21.47
3 child codes. Green means billable.
Other codes under T21.4
- T21.40Corrosion of unspecified degree of trunk, unspecified site
- T21.41Corrosion of unspecified degree of chest wall
- T21.42Corrosion of unspecified degree of abdominal wall
- T21.43Corrosion of unspecified degree of upper back
- T21.44Corrosion of unspecified degree of lower back
- T21.45Corrosion of unspecified degree of buttock
- T21.46Corrosion of unspecified degree of male genital region
- T21.49Corrosion of unspecified degree of other site of trunk