MCMedicalCodingSoftware
S93.431A

S93.431A: Sprain of tibiofibular ligament of right ankle, initial encounter

Billable / specific codeICD-10-CMright

S93.431A is a billable, specific ICD-10-CM code for sprain of tibiofibular ligament of right ankle, initial encounter. It is valid for submission on a claim.

Check S93.431A 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 S93

A
initial encounter
D
subsequent encounter
S
sequela

Excludes2 inherited from the categories above S93.431A

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

Written on S93.4: Sprain of ankle

  • injury of Achilles tendon (S86.0-)

Written on S93: Dislocation and sprain of joints and ligaments at ankle, foot and toe level

  • strain of muscle and tendon of ankle and foot (S96.-)

Risk adjustment

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

Medicare coverage

S93.431A is named in 5 Medicare coverage policies: 5 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A53058Billing and Coding: Home Health Physical Therapy
  • A53065Billing and Coding: Outpatient Physical Therapy
  • A56787Billing and Coding: Nonvascular Extremity Ultrasound
  • A57079Billing and Coding: Injections - Tendon, Ligament, and Ganglion Cyst

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under S93.431

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.