S66.318A ICD-10-CM Code: Strain of extensor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
S66.318AStrain of extensor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where S66.318A 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
Subcategory S66.318
Strain of extensor muscle, fascia and tendon of other finger at wrist and hand level
- 5
Code S66.318A
Strain of extensor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for S66.318A.
Code first
No “code first” instruction is listed for S66.318A.
Use additional code
No “use additional code” instruction is listed for S66.318A.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for S66.318A.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for S66.318A.
Transparency
Source and release
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 sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code S66.318A mean?
S66.318A is the FY 2027 U.S. ICD-10-CM code for “Strain of extensor muscle, fascia and tendon of other finger at wrist and hand level, initial encounter.”
Is S66.318A a billable or specific ICD-10-CM code?
Yes. In the FY 2027 reference data used on this page, S66.318A 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 S66.318A located in ICD-10-CM?
S66.318A 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 S66.318, Strain of extensor muscle, fascia and tendon of other finger at wrist and hand level.
What coding notes are listed for S66.318A?
No inclusion terms are listed for S66.318A in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.
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