S91.101

⚠ Non-billable (Header)

Unspecified open wound of right great toe without damage to nail

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

⚠️ This is a category header code — not billable. Use a more specific child code below.

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❌ Excludes1

inherited

Rules inherited from parent codes in the hierarchy.

S91

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

Child Codes (3)

S91.101AUnspecified open wound of right great toe without damage to nail, initial encounter✓ Billable S91.101DUnspecified open wound of right great toe without damage to nail, subsequent encounter✓ Billable S91.101SUnspecified open wound of right great toe without damage to nail, sequela✓ Billable

Clinical Description

ICD-10-CM code S91.101 represents unspecified open wound of right great toe without damage to nail. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 7-character code at the 6th level of specificity. There are 3 more specific child codes under S91.101. Coders should note that S91.101 has 2 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.

Frequently Asked Questions

What is ICD-10 code S91.101?

ICD-10-CM code S91.101 is "Unspecified open wound of right great toe without damage to nail". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is S91.101 a billable ICD-10 code?

No, S91.101 is a non-billable header code. A more specific child code must be used for billing.

What codes are excluded with S91.101?

S91.101 has 2 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.

Related Codes in S91.10

Other codes in the same category that may be relevant for differential coding:

S91.102Unspecified open wound of left great toe without damage to nail S91.103Unspecified open wound of unspecified great toe without damage to nail S91.104Unspecified open wound of right lesser toe(s) without damage to nail S91.105Unspecified open wound of left lesser toe(s) without damage to nail S91.106Unspecified open wound of unspecified lesser toe(s) without damage to nail S91.109Unspecified open wound of unspecified toe(s) without damage to nail

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Code Information

CodeS91.101

BillableNo — Header code

ParentS91.10

CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)

Excludes12 rule(s)

Excludes20 note(s)

Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)