T20.49XA
T20.49XA: Corrosion of unspecified degree of multiple sites of head, face, and neck, initial encounter
Billable / specific codeICD-10-CM
T20.49XA is a billable, specific ICD-10-CM code for corrosion of unspecified degree of multiple sites of head, face, and neck, initial encounter. It is valid for submission on a claim.
Check T20.49XA with the rest of the claim: free scrubber7th character "A": initial encounter
The appropriate 7th character is to be added to each code from category T20
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2 inherited from the categories above T20.49XA
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.
Medicare coverage
T20.49XA is named in 2 Medicare coverage policies: 2 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A56900Billing and Coding: Immunizations
- A59186Billing and Coding: Magnesium
Code history
Unchanged in every release from FY2024 to FY2027.