S81.011S Laceration without foreign body, right knee, sequela

ICD-10-CM Code S81.011S: Laceration without foreign body, right knee, sequela

ICD-10-CM code S81.011S is identified as a laceration without foreign body, right knee, sequela. Public sources confirm this specific code and its official label. The available excerpts establish the code's billable status and list related knee laceration codes for other encounters and laterality. The sources do not provide detailed clinical descriptions of this specific injury. 3 5

Plain-language overview

Code S81.011S is officially labeled as laceration without foreign body, right knee, sequela. This code is listed among other knee laceration codes that specify different encounters or the opposite knee. 3 4

What this code represents

The designation S81.011S explicitly indicates a laceration without a foreign body located in the right knee. The code's label includes the term sequela, distinguishing it from initial encounter codes like S81.012A for the left knee. 3 5

Coding details

Code S81.011S is identified as a billable code. In contrast, the related code S81.012 for laceration without foreign body, left knee, is identified as non-billable. 5

The provided sources list S81.011S alongside S81.012A and S81.012D. These related codes represent lacerations without foreign body of the left knee for initial and subsequent encounters. 3

Documentation considerations

Clinical literature indicates that a missed foreign body on initial examination may occur in close to 38% of cases. This finding is documented in the context of diagnosing puncture wounds of the foot. 2

Clinical guidance states that patients with clean wounds, no evidence of infection, and no awareness of a foreign body may not require exploration and removal. The same source notes that delayed removal is possible if the patient becomes aware of the foreign body or develops a complication. 1

What the sources add

The Centers for Medicare and Medicaid Services provides the official code label for S81.011S within wound care articles. A separate coding reference site confirms this identical label and adds that the code is billable. 3 5

Clinical sources discuss the evaluation and removal of retained foreign bodies, including the use of ultrasound or image intensifiers for intraoperative identification. These clinical details contrast with code S81.011S, which explicitly specifies a laceration without a foreign body. 1 3

Sources

1. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-25.
2. A Child with a Painful Foot: How to Get a Definitive Diagnosis — pmc.ncbi.nlm.nih.gov; accessed 2026-07-25.
3. Article - Billing and Coding: Wound and Ulcer Care (A58565) — cms.gov; accessed 2026-07-25.
4. MCD Search — cms.gov; accessed 2026-07-25.
5. Codigo. The #1 Billing Agency for Medical Practices — codigo.care; accessed 2026-07-25.