2026 ICD-10-CM Diagnosis Code S81.831SPuncture wound without foreign body, right lower leg, sequela
S81.831S is a billable ICD-10-CM diagnosis code for puncture wound without foreign body, right lower leg, sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. 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. The code is exempt from POA reporting. Coders also document this condition as gunshot wound of lower leg. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Injury, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
S81.831S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Injuries to the knee and lower leg (S80-S89).
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Gunshot wound of lower leg
- Gunshot wound of right lower leg
- Puncture wound of calf
- Puncture wound of right calf
- Puncture wound of right lower leg
- Stab wound of right lower leg
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Open wound of knee and lower leg (S81). 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
Wounds and Injuries
An injury is damage to your body. It is a general term that refers to harm caused by accidents, falls, hits, weapons, and more. In the U.S., millions of people injure themselves every year. These injuries range from minor to life-threatening.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert S81.831S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About S81.831SOverview
What is the ICD-10 code for puncture wound without foreign body, right lower leg, sequela?
The ICD-10-CM code for puncture wound without foreign body, right lower leg, sequela is S81.831S (sometimes written as S81831S). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is S81.831S (Puncture wound without foreign body, right lower leg) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report puncture wound without foreign body, right lower leg, sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in S81.831S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the puncture wound without foreign body, right lower leg itself has resolved, not the original event.
What MS-DRG does S81.831S group to?
When puncture wound without foreign body, right lower leg, sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 604, 605, with relative weights from 0.9160 to 1.4721 depending on complications. Higher weights mean higher Medicare reimbursement.
Is S81.831S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for puncture wound without foreign body, right lower leg, sequela on inpatient claims. The code appears in the Injuries to the knee and lower leg (S80-S89) range of the CMS exempt list.
