MCMedicalCodingSoftware
S56.319A

S56.319A: Strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, initial encounter

Billable / specific codeICD-10-CM

S56.319A is a billable, specific ICD-10-CM code for strain of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, initial encounter. It is valid for submission on a claim.

Check S56.319A with the rest of the claim: free scrubber

7th character "A": initial encounter

The appropriate 7th character is to be added to each code from category S56

A
initial encounter
D
subsequent encounter
S
sequela

Excludes2 inherited from the categories above S56.319A

Not part of this code, but both may be coded when both are present.

Written on S56: Injury of muscle, fascia and tendon at forearm level

  • injury of muscle, fascia and tendon at or below wrist (S66.-)
  • sprain of joints and ligaments of elbow (S53.4-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

S56.319A is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A53065Billing and Coding: Outpatient Physical Therapy

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under S56.319

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.