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U.S. ICD-10-CM · FY 2027

S66.307S ICD-10-CM Code: Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

S66.307S

Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where S66.307S sits

  1. 1

    Chapter 19

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

  2. 2

    Section

    Injuries to the wrist, hand and fingers (S60-S69)

  3. 3

    Category S66

    Injury of muscle, fascia and tendon at wrist and hand level

  4. 4

    Subcategory S66.307

    Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level

  5. 5

    Code S66.307S

    Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for S66.307S.

Code first

No “code first” instruction is listed for S66.307S.

Use additional code

No “use additional code” instruction is listed for S66.307S.

Excludes1

Conditions that should not be reported together with this code.

No Excludes1 note is listed for S66.307S.

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for S66.307S.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code S66.307S mean?

S66.307S is the FY 2027 U.S. ICD-10-CM code for “Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, sequela.”

Is S66.307S a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, S66.307S has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is S66.307S located in ICD-10-CM?

S66.307S is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Injuries to the wrist, hand and fingers (S60-S69) (S60–S69), under category S66, Injury of muscle, fascia and tendon at wrist and hand level and subcategory S66.307, Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level.

What coding notes are listed for S66.307S?

No inclusion terms are listed for S66.307S in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.

Keep exploring

Related S66.307 codes

S66.307A

Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter

S66.307D

Unspecified injury of extensor muscle, fascia and tendon of left little finger at wrist and hand level, subsequent encounter

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