S66 ICD-10-CM Code: Injury of muscle, fascia and tendon at wrist and hand level
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
S66Injury of muscle, fascia and tendon at wrist and hand level
ICD-10-CM diagnosis code · United States clinical modification
Where S66 sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Injuries to the wrist, hand and fingers (S60-S69)
- 3
Category S66
Injury of muscle, fascia and tendon at wrist and hand level
- 4
Code S66
Injury of muscle, fascia and tendon at wrist and hand level
Codes under S66
S66 is a non-billable category. Choose the child code that best matches the documented diagnosis.
S66.0Injury of long flexor muscle, fascia and tendon of thumb at wrist and hand levelS66.1Injury of flexor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelS66.2Injury of extensor muscle, fascia and tendon of thumb at wrist and hand levelS66.3Injury of extensor muscle, fascia and tendon of other and unspecified finger at wrist and hand levelS66.4Injury of intrinsic muscle, fascia and tendon of thumb at wrist and hand levelS66.5Injury of intrinsic muscle, fascia and tendon of other and unspecified finger at wrist and hand levelS66.8Injury of other specified muscles, fascia and tendons at wrist and hand levelS66.9Injury of unspecified muscle, fascia and tendon at wrist and hand levelNotes for this code
Inclusion terms
No inclusion terms are listed for S66.
Code first
No “code first” instruction is listed for S66.
Use additional code
No “use additional code” instruction is listed for S66.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for S66.
Excludes2
Conditions not included here that may be reported separately when present.
- sprain of joints and ligaments of wrist and hand (S63.-)
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.
Frequently asked questions
What does ICD-10-CM code S66 mean?
S66 is the FY 2027 U.S. ICD-10-CM code for “Injury of muscle, fascia and tendon at wrist and hand level.”
Is S66 a billable or specific ICD-10-CM code?
No. S66 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is S66 located in ICD-10-CM?
S66 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.
What coding notes are listed for S66?
No inclusion terms are listed for S66 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. Excludes2 notes: sprain of joints and ligaments of wrist and hand (S63.-).