MCMedicalCodingSoftware
T23.321A

T23.321A: Burn of third degree of single right finger (nail) except thumb, initial encounter

Billable / specific codeICD-10-CMright

T23.321A is a billable, specific ICD-10-CM code for burn of third degree of single right finger (nail) except thumb, initial encounter. It is valid for submission on a claim.

Check T23.321A 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 T23

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

T23.321A is named in 14 Medicare coverage policies: 14 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A52438Billing and Coding: Tetanus Immunization
  • A52998Billing and Coding: Surgical Treatment of Nails
  • A53058Billing and Coding: Home Health Physical Therapy
  • A53065Billing and Coding: Outpatient Physical Therapy

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under T23.321

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.