S66.809
⚠ Non-billable (Header)Unspecified injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand
Injury, poisoning and certain other consequences of external causes (S00-T88)
⚠️ This is a category header code — not billable. Use a more specific child code below.
⚠️ Excludes2
inheritedRules inherited from parent codes.
- • sprain of joints and ligaments of wrist and hand (S63.-)
Child Codes (3)
Clinical Description
ICD-10-CM code S66.809 represents unspecified injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.
This is a 7-character code at the 6th level of specificity. There are 3 more specific child codes under S66.809.
Frequently Asked Questions
What is ICD-10 code S66.809?
ICD-10-CM code S66.809 is "Unspecified injury of other specified muscles, fascia and tendons at wrist and hand level, unspecified hand". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).
Is S66.809 a billable ICD-10 code?
No, S66.809 is a non-billable header code. A more specific child code must be used for billing.
Can S66.809 be coded with other codes?
S66.809 has 1 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.
Related Codes in S66.80
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)