S21.101A — Unspecified open wound of right front wall of thorax without penetration into thoracic cavity, initial encounter
S21.101A is a billable, specific ICD-10-CM code for unspecified open wound of right front wall of thorax without penetration into thoracic cavity, initial encounter. It is valid for submission on a claim.
7th character "A" — initial encounter
The appropriate 7th character is to be added to each code from category S21
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Risk adjustment
S21.101A does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
S21.101A is named in 7 Medicare coverage policies — 7 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52438Billing and Coding: Tetanus Immunization
- A53058Billing and Coding: Home Health Physical Therapy
- A53065Billing and Coding: Outpatient Physical Therapy
- A54767Billing and Coding: Medicare Preventive Coverage for Certain Vaccines
Related codes at this level
Codes that share S21.101. If S21.101A is not quite right, the correct code is usually one of these.
Questions about S21.101A
- Is S21.101A a billable ICD-10-CM code?
- Yes. S21.101A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S21.101A sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the thorax (S20-S29).