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ICD-10-CM 2027 diagnosis code

T21.14XABurn of first degree of lower back, initial encounter

✓ Billable / specificRequires 7th character

T21.14XA is a valid, billable ICD-10-CM code for burn of first degree of lower back, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

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 T21.14XA

T21.14XA is the ICD-10-CM diagnosis code for burn of first degree of lower back, 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.

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 935 (Non-Extensive Burns, relative weight 2.4243), 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 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 942.14 (erythema [first degree] of back [any part]).

7th character

Ainitial encounter

Other encounter types for T21.14:

Notes that apply from higher levels

Instructions written at a parent level also apply to T21.14XA.

› From T21.1 Burn of first 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 →
  • 942.14Erythema [first degree] of back [any part]approximate

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 T21.14XA

Is T21.14XA billable?

Yes. T21.14XA 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 T21.14XA 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 T21.14XA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict T21.14XA as a principal diagnosis.

Is T21.14XA a CC or MCC?

No. T21.14XA is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does T21.14XA group to?

T21.14XA is used in the MS-DRG v44.0 logic for MS-DRG 935 (Non-Extensive Burns). 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 T21.14XA?

The CMS General Equivalence Mappings map T21.14XA to ICD-9-CM 942.14.