S88.029D — Partial traumatic amputation at knee level, unspecified lower leg, subsequent encounter
S88.029D is a billable, specific ICD-10-CM code for partial traumatic amputation at knee level, unspecified lower leg, subsequent encounter. It is valid for submission on a claim.
7th character "D" — subsequent encounter
The appropriate 7th character is to be added to each code from category S88
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 inherited from the categories above S88.029D
These are not written on S88.029D, but they bind it: a note on a category applies to every code beneath it. Billing S88.029D with anything listed here is a denial.
Other codes that can never be billed with S88.029D
These codes carry an Excludes1 note pointing at S88.029D. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S88.029D alone.
Risk adjustment
S88.029D 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.
Code history
S88.029D has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Related codes at this level
Codes that share S88.029. If S88.029D is not quite right, the correct code is usually one of these.
Questions about S88.029D
- Is S88.029D a billable ICD-10-CM code?
- Yes. S88.029D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S88.029D sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the knee and lower leg (S80-S89).
- What cannot be coded together with S88.029D?
- S88.029D carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above S88.029D (S88) and apply to it just the same.