S78.129D — Partial traumatic amputation at level between unspecified hip and knee, subsequent encounter
S78.129D is a billable, specific ICD-10-CM code for partial traumatic amputation at level between unspecified hip and knee, 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 S78
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes1 inherited from the categories above S78.129D
These are not written on S78.129D, but they bind it: a note on a category applies to every code beneath it. Billing S78.129D with anything listed here is a denial.
Other codes that can never be billed with S78.129D
These codes carry an Excludes1 note pointing at S78.129D. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading S78.129D alone.
Risk adjustment
S78.129D 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
S78.129D 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 S78.129. If S78.129D is not quite right, the correct code is usually one of these.
Questions about S78.129D
- Is S78.129D a billable ICD-10-CM code?
- Yes. S78.129D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S78.129D sit in the tabular list?
- Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the hip and thigh (S70-S79).
- What cannot be coded together with S78.129D?
- S78.129D 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 S78.129D (S78.1, S78) and apply to it just the same.