S91.102 Unspecified open wound of left great toe without damage to nail

ICD-10-CM Diagnosis Code S91.102: Unspecified open wound of left great toe without damage to nail

ICD-10-CM code S91.102 designates an unspecified open wound of the left great toe without damage to the nail. Terminology records classify this concept under the parent code S91.10 and assign it the semantic type of Injury or Poisoning. The code is active and has no narrower child concepts. 1 3

Plain-language overview

Code S91.102 identifies an unspecified open wound located specifically on the left great toe where the nail remains undamaged, providing a standardized diagnostic label for this particular injury. 1

What this code represents

The terminology record for S91.102 assigns a semantic type of Injury or Poisoning and lists the record status as active within the ICD-10-CM version 2026. 1

Within the ICD-10-CM hierarchy, S91.102 is a child of the parent concept S91.10, which broadly covers unspecified open wounds of a toe without damage to the nail. 1

Coding details

The S91.102 terminology record indicates this code has no narrower child concepts, and a separate concept explorer confirms zero child concepts for this specific diagnosis. 1 3

A separate coding reference notes that S91.102 requires an appropriate seventh character, while a definitions manual lists the initial encounter variation for unspecified open wounds of the left great toe without nail damage. 5 2

Documentation considerations

The official terminology record for S91.102 includes the published abbreviation unsp open wound of left great toe without damage to nail as an alternate name for this diagnosis. 1

What the sources add

The National Cancer Institute terminology record defines the core diagnostic label, and the CMS definitions manual lists the initial encounter variation among related toe wound diagnoses. 1 2

A distinct external coding reference confirms the S91.102 code exists and mentions a seventh character requirement, whereas the official terminology record does not explicitly detail this seventh character extension. 5 1

Sources

1. ICD-10-CM S91.102 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. ICD-10-CM/PCS MS-DRG v35.0 Definitions Manual — cms.gov; accessed 2026-07-27.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
4. Article - Billing and Coding: Surgical Treatment of Nails (A59028) — cms.gov; accessed 2026-07-27.
5. Smart ICD 10 — smarticd10.health.belgium.be; accessed 2026-07-27.