MCMedicalCodingSoftware
S03.40XA

S03.40XA: Sprain of jaw, unspecified side, initial encounter

Billable / specific codeICD-10-CMunspecified

S03.40XA is a billable, specific ICD-10-CM code for sprain of jaw, unspecified side, initial encounter. It is valid for submission on a claim.

Check S03.40XA 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 S03

A
initial encounter
D
subsequent encounter
S
sequela

Excludes2 inherited from the categories above S03.40XA

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

Written on S03: Dislocation and sprain of joints and ligaments of head

  • Strain of muscle or tendon of head (S09.1)

Risk adjustment

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

Medicare coverage

S03.40XA is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56729Billing and Coding: Magnetic Resonance Imaging of the Head and Neck

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under S03.40

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.