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S91

Non-billable

Open wound of ankle, foot and toes

S91 is the ICD-10-CM code for Open wound of ankle, foot and toes. It is a non-billable category code — use a more specific child code such as S91.0 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Subcodes
4
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Excludes1 — not coded here

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

Notes

  • •any associated wound infection

Frequently asked questions

What is ICD-10 code S91?
S91 is the ICD-10-CM code for "Open wound of ankle, foot and toes". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is S91 a billable code?
No — S91 is a non-billable header code. Use a more specific child code (such as S91.0) for billing.
What are the subcodes of S91?
S91 has 4 more specific child codes, including S91.0, S91.1, S91.2.
What is excluded from S91?
Excludes1 (not coded here): open fracture of ankle, foot and toes (S92.-with 7th character B); traumatic amputation of ankle and foot (S98.-).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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