T21.73XD
T21.73XD: Corrosion of third degree of upper back, subsequent encounter
Billable / specific codeICD-10-CMPOA exempt
T21.73XD is a billable, specific ICD-10-CM code for corrosion of third degree of upper back, subsequent encounter. It is valid for submission on a claim.
Check T21.73XD with the rest of the claim: free scrubber7th character "D": subsequent encounter
The appropriate 7th character is to be added to each code from category T21
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Corrosion of third degree of interscapular region
Excludes2 inherited from the categories above T21.73XD
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
T21.73XD is named in 7 Medicare coverage policies: 7 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.
- A53058Billing and Coding: Home Health Physical Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
- A57221Billing and Coding: Plastic Surgery
- A57311Billing and Coding: Physical Therapy - Home Health
Code history
Unchanged in every release from FY2024 to FY2027.