S85.409D — Unspecified injury of lesser saphenous vein at lower leg level, unspecified leg, subsequent encounter
S85.409D is a billable, specific ICD-10-CM code for unspecified injury of lesser saphenous vein at lower leg level, unspecified 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 S85
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2 inherited from the categories above S85.409D
Also inherited, and the opposite of Excludes1: these conditions are not part of S85.409D, but a patient can have both, so you may code both.
Risk adjustment
S85.409D 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
S85.409D 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 S85.409. If S85.409D is not quite right, the correct code is usually one of these.
Questions about S85.409D
- Is S85.409D a billable ICD-10-CM code?
- Yes. S85.409D is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does S85.409D 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).