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S66.3

Non-billable

Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level

S66.3 is the ICD-10-CM code for Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level. It is a non-billable category code — use a more specific child code such as S66.30 for billing.

Status
Header (non-billable)
Chapter
S00-T88
Parent
S66
Subcodes
4
Edition
FY2026

S00-T88 Injury, poisoning and certain other consequences of external causes

Excludes2 — not included here

  • •Injury of extensor muscle, fascia and tendon of thumb at wrist and hand level (S66.2-)

Frequently asked questions

What is ICD-10 code S66.3?
S66.3 is the ICD-10-CM code for "Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand level". It falls under S00-T88 Injury, poisoning and certain other consequences of external causes.
Is S66.3 a billable code?
No — S66.3 is a non-billable header code. Use a more specific child code (such as S66.30) for billing.
What are the subcodes of S66.3?
S66.3 has 4 more specific child codes, including S66.30, S66.31, S66.32.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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