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T21.37XA

T21.37XABurn of third degree of female genital region, initial encounter

Billable / specific codeICD-10-CM

T21.37XA is a billable, specific ICD-10-CM code for burn of third degree of female genital region, initial encounter. It is valid for submission on a claim.

7th character "A" — initial encounter

The appropriate 7th character is to be added to each code from category T21

A
initial encounter
D
subsequent encounter
S
sequela

Excludes2 — not included here, but may coexist

The excluded condition is not part of this code, but a patient can have both. You may code both.

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Burn of third degree of labium (majus) (minus)
  • Burn of third degree of perineum
  • Burn of third degree of vulva

Risk adjustment

T21.37XA does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Medicare coverage

T21.37XA is named in 10 Medicare coverage policies 10 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.

  • A52438Billing and Coding: Tetanus Immunization
  • A53058Billing and Coding: Home Health Physical Therapy
  • A53065Billing and Coding: Outpatient Physical Therapy
  • A56900Billing and Coding: Immunizations

Related codes at this level

Codes that share T21.37. If T21.37XA is not quite right, the correct code is usually one of these.

Questions about T21.37XA

Is T21.37XA a billable ICD-10-CM code?
Yes. T21.37XA is a billable, specific ICD-10-CM code and is valid for submission on a claim.
Where does T21.37XA sit in the tabular list?
Injury, poisoning and certain other consequences of external causes (S00-T88), in the block Burns and corrosions of external body surface, specified by site (T20-T25).
ICD-10-CMFY2026-Apr· effective April 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.