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ICD-10-CM 2027 diagnosis code

T26.21XABurn with resulting rupture and destruction of right eyeball, initial encounter

✓ Billable / specificRequires 7th characterCC — complication/comorbidity

T26.21XA is a valid, billable ICD-10-CM code for burn with resulting rupture and destruction of right eyeball, initial encounter. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Burn w resulting rupture and dest of right eyeball, init

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 T26.21XA

T26.21XA is the ICD-10-CM diagnosis code for burn with resulting rupture and destruction of right eyeball, initial encounter. It belongs to category T26 (burn and corrosion confined to eye and adnexa), block T26-T28 (burns and corrosions confined to eye and internal organs) 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 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent, relative weight 1.2471) and DRG 125 (Other Disorders of the Eye without MCC, relative weight 0.7702), in MDC 02 (Diseases and Disorders of the Eye), 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 940.5 (burn with resulting rupture and destruction of eyeball) and 941.52 (deep necrosis of underlying tissues [deep third degree] with loss of a body part, of eye (with other parts of face, head, and neck)).

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 T26.21:

Notes that apply from higher levels

Instructions written at a parent level also apply to T26.21XA.

› From T26.2 Burn with resulting rupture and destruction of eyeball
Use additional code
  • external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)

Broader instructions also apply from 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 →
  • 940.5Burn with resulting rupture and destruction of eyeballapproximate
  • 941.52Deep necrosis of underlying tissues [deep third degree] with loss of a body part, of eye (with other parts of face, head, and neck)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 T26.21XA

Is T26.21XA billable?

Yes. T26.21XA 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 T26.21XA 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 T26.21XA be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict T26.21XA as a principal diagnosis.

Is T26.21XA a CC or MCC?

T26.21XA is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does T26.21XA group to?

T26.21XA is used in the MS-DRG v44.0 logic for MS-DRG 124 (Other Disorders of the Eye with MCC or Thrombolytic Agent) and MS-DRG 125 (Other Disorders of the Eye without MCC). 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 T26.21XA?

The CMS General Equivalence Mappings map T26.21XA to ICD-9-CM 940.5 and 941.52.