2026 ICD-10-CM Diagnosis Code S91.332APuncture wound without foreign body, left foot, initial encounter
S91.332A is a billable ICD-10-CM diagnosis code for puncture wound without foreign body, left foot, initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 604 through 605, 963 through 965. Coders also document this condition as gunshot wound of foot. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Open wounds to limbs, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Gunshot wound of foot
- Gunshot wound of left foot
- Puncture wound of left foot
- Stab wound of foot
- Stab wound of left foot
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Open wound of ankle, foot and toes (S91). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Foot Injuries and Disorders
Each of your feet has 26 bones, 33 joints, and more than 100 tendons, muscles, and ligaments. No wonder a lot of things can go wrong. Here are a few common problems:
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Convert S91.332A to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S91.332AOverview
Is S91.332A (Puncture wound without foreign body, left foot) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report puncture wound without foreign body, left foot, initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in S91.332A mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for puncture wound without foreign body, left foot, such as an emergency visit or first evaluation.
What MS-DRG does S91.332A group to?
When puncture wound without foreign body, left foot, initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 604, 605, 963, 964, 965, with relative weights from 0.9160 to 2.7338 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of S91.332A?
Under the General Equivalence Mappings, puncture wound without foreign body, left foot, initial encounter converts to ICD-9-CM 892.0 (open wound of foot). The mapping is approximate, so confirm the match fits the documentation.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.
