T21.64XD
T21.64XD: Corrosion of second degree of lower back, subsequent encounter
Billable / specific codeICD-10-CMPOA exempt
T21.64XD is a billable, specific ICD-10-CM code for corrosion of second degree of lower back, subsequent encounter. It is valid for submission on a claim.
Check T21.64XD 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
Excludes2 inherited from the categories above T21.64XD
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
T21.64XD is named in 7 Medicare coverage policies: 6 listing it as supporting medical necessity, and 1 listing it as NOT covered. Which one applies depends on your Medicare contractor.
- A56566Billing and Coding: Outpatient Physical and Occupational Therapy Servicesnot covered
- A53058Billing and Coding: Home Health Physical Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
- A57311Billing and Coding: Physical Therapy - Home Health
Code history
Unchanged in every release from FY2024 to FY2027.