S81.009S
✓ BillableUnspecified open wound, unspecified knee, sequela
Injury, poisoning and certain other consequences of external causes (S00-T88)
❌ Excludes1
inheritedRules inherited from parent codes in the hierarchy.
- • open fracture of knee and lower leg (S82.-)
- • traumatic amputation of lower leg (S88.-)
Clinical Description
ICD-10-CM code S81.009S represents unspecified open wound, unspecified knee, sequela. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.
This is a 8-character code at the 7th level of specificity. This is the most specific code available in this subcategory. Coders should note that S81.009S has 2 Excludes1 restriction(s) — codes that cannot be reported together on the same claim.
Frequently Asked Questions
What is ICD-10 code S81.009S?
ICD-10-CM code S81.009S is "Unspecified open wound, unspecified knee, sequela". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).
Is S81.009S a billable ICD-10 code?
Yes, S81.009S is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
What codes are excluded with S81.009S?
S81.009S has 2 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
Can S81.009S be coded with other codes?
S81.009S has 1 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in S81.009
Other codes in the same category that may be relevant for differential coding:
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)