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ICD-10-CM 2027 diagnosis code

T21.36XABurn of third degree of male genital region, initial encounter

✓ Billable / specificRequires 7th characterCC — complication/comorbidityMale only

T21.36XA is a valid, billable ICD-10-CM code for burn of third degree of male genital region, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Burn of third degree of male genital region, init encntr

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About T21.36XA

T21.36XA is the ICD-10-CM diagnosis code for burn of third degree of male genital region, initial encounter. It belongs to category T21 (burn and corrosion of trunk), block T20-T25 (burns and corrosions of external body surface, specified by site) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

The 7th character "A" means initial encounter: use it while the patient is receiving active treatment for the condition.

As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 927 (Extensive Burns or Full Thickness Burns with MV >96 Hours with Skin Graft, relative weight 27.846), DRG 933 (Extensive Burns or Full Thickness Burns with MV >96 Hours without Skin Graft, relative weight 3.5048), DRG 928 (Full Thickness Burn with Skin Graft or Inhalation Injury with CC/MCC, relative weight 7.6477), DRG 929 (Full Thickness Burn with Skin Graft or Inhalation Injury without CC/MCC, relative weight 3.0193) and DRG 934 (Full Thickness Burn without Skin Graft or Inhalation Injury, relative weight 1.9895), in MDC 22 (Burns), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is on the CMS list of diagnoses consistent only with male patients (the sex-conflict edit itself was retired in FY2025).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 942.35 (full-thickness skin loss [third degree, not otherwise specified] of genitalia), 942.45 (deep necrosis of underlying tissues [deep third degree] without mention of loss of a body part, of genitalia) and 942.55 (deep necrosis of underlying tissues [deep third degree] with loss of a body part, of genitalia).

7th character

Ainitial encounter

CC/MCC status for this injury by encounter: CC for A; Neither CC nor MCC for D, S.

Other encounter types for T21.36:

Notes that apply from higher levels

Instructions written at a parent level also apply to T21.36XA.

› From T21.3 Burn of third degree of trunk
Use additional code
  • external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)
› From T21 Burn and corrosion of trunk
Includes
  • burns and corrosion of hip region
Excludes2
  • burns and corrosion of axilla (T22.- with fifth character 4)
  • burns and corrosion of scapular region (T22.- with fifth character 6)
  • burns and corrosion of shoulder (T22.- with fifth character 5)

Broader instructions also apply from T20-T25 Burns and corrosions of external body surface, specified by site and Chapter 19: Injury, poisoning and certain other consequences of external causes.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

ICD-9-CM equivalent

Converter →
  • 942.35Full-thickness skin loss [third degree, not otherwise specified] of genitaliaapproximate
  • 942.45Deep necrosis of underlying tissues [deep third degree] without mention of loss of a body part, of genitaliaapproximate
  • 942.55Deep necrosis of underlying tissues [deep third degree] with loss of a body part, of genitaliaapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about T21.36XA

Is T21.36XA billable?

Yes. T21.36XA is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

What does the "A" at the end of T21.36XA mean?

It is the 7th character for initial encounter. Per the official guidelines, use it while the patient is receiving active treatment for the condition.

Can T21.36XA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict T21.36XA as a principal diagnosis.

Is T21.36XA a CC or MCC?

T21.36XA is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does T21.36XA group to?

T21.36XA is used in the MS-DRG v44.0 logic for MS-DRG 927 (Extensive Burns or Full Thickness Burns with MV >96 Hours with Skin Graft), MS-DRG 933 (Extensive Burns or Full Thickness Burns with MV >96 Hours without Skin Graft), MS-DRG 928 (Full Thickness Burn with Skin Graft or Inhalation Injury with CC/MCC), MS-DRG 929 (Full Thickness Burn with Skin Graft or Inhalation Injury without CC/MCC) and MS-DRG 934 (Full Thickness Burn without Skin Graft or Inhalation Injury). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for T21.36XA?

The CMS General Equivalence Mappings map T21.36XA to ICD-9-CM 942.35, 942.45 and 942.55.