MCMedicalCodingSoftware
S64.491D

S64.491D: Injury of digital nerve of left index finger, subsequent encounter

Billable / specific codeICD-10-CMPOA exemptleft

S64.491D is a billable, specific ICD-10-CM code for injury of digital nerve of left index finger, subsequent encounter. It is valid for submission on a claim.

Check S64.491D with the rest of the claim: free scrubber

7th character "D": subsequent encounter

The appropriate 7th character is to be added to each code from category S64

A
initial encounter
D
subsequent encounter
S
sequela

Risk adjustment

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

Medicare coverage

S64.491D is named in 9 Medicare coverage policies: 9 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A53065Billing and Coding: Outpatient Physical Therapy
  • A54095Billing and Coding: Nerve Conduction Studies and Electromyography
  • A54969Billing and Coding: Nerve Conduction Studies and Electromyography
  • A56034Billing and Coding: Nerve Blockade for Treatment of Chronic Pain and Neuropathy

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under S64.491

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.