Is S91.229A a billable ICD-10-CM code?

Yes. S91.229A is a billable, specific ICD-10-CM code and is valid for submission on a claim.

Where does S91.229A sit in the tabular list?

Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the ankle and foot (S90-S99).

What cannot be coded together with S91.229A?

S91.229A 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 S91.229A (S91) and apply to it just the same.

S91.229A

S91.229A — Laceration with foreign body of unspecified toe(s) with damage to nail, initial encounter

Billable / specific codeICD-10-CM

S91.229A is a billable, specific ICD-10-CM code for laceration with foreign body of unspecified toe(s) with damage to nail, 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 S91

A: initial encounter
D: subsequent encounter
S: sequela

Excludes1 inherited from the categories above S91.229A

These are not written on S91.229A, but they bind it: a note on a category applies to every code beneath it. Billing S91.229A with anything listed here is a denial.

Written on S91 — Open wound of ankle, foot and toes

open fracture of ankle, foot and toes (S92.-with 7th character B)
traumatic amputation of ankle and foot (S98.-)

Risk adjustment

S91.229A 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

S91.229A is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

A57554Billing and Coding: Immune Globulins

Code history

S91.229A 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 S91.229. If S91.229A is not quite right, the correct code is usually one of these.

Questions about S91.229A

Is S91.229A a billable ICD-10-CM code?: Yes. S91.229A is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does S91.229A sit in the tabular list?: Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Injuries to the ankle and foot (S90-S99).
What cannot be coded together with S91.229A?: S91.229A 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 S91.229A (S91) and apply to it just the same.