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ICD-10/T26.42XA

T26.42XA ICD-10-CM Code: Burn of left eye and adnexa, part unspecified, initial encounter

T26.42XA is the authoritative medical code for Burn of left eye and adnexa, part unspecified, initial encounter. This classification is used in medical billing and clinical recording to specify the clinical criteria for burn of left eye and adnexa, part unspecified, initial encounter (ICD-10-CM T26.42XA), ensuring healthcare documentation aligns with current federal coding standards.

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 124 — OTHER DISORDERS OF THE EYE WITH MCC OR THROMBOLYTIC AGENT (MDC 02)
  • MS-DRG 125 — OTHER DISORDERS OF THE EYE WITHOUT MCC (MDC 02)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Burn of left eye and adnexa, part unspecified, initial encounter is a billable ICD-10-CM diagnosis code (T26.42A). Use additional code: external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92). 7th character: The appropriate 7th character is to be added to each code from category T26.

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for T26.42XA in the official ICD-10-CM tabular list.

Use Additional Code

Supplementary codes the tabular list directs you to add.

  • external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92)

Frequently Asked Questions (FAQ) & Clinical Guidance

Does T26.42XA require a 7th character?

Yes. The appropriate 7th character is to be added to each code from category T26.

Is an additional code needed with T26.42XA?

Use additional code(s) to specify: external cause code to identify the source, place and intent of the burn (X00-X19, X75-X77, X96-X98, Y92).

Nearest Codes in This Family

Official ICD-10-CM classifications closest to T26.42XA in its code family, with their registry titles.

  • T26.41 — Burn of right eye and adnexa, part unspecified
  • T26.41XA — Burn of right eye and adnexa, part unspecified, initial encounter
  • T26.41XD — Burn of right eye and adnexa, part unspecified, subsequent encounter
  • T26.41XS — Burn of right eye and adnexa, part unspecified, sequela
  • T26.42 — Burn of left eye and adnexa, part unspecified
  • T26.42XD — Burn of left eye and adnexa, part unspecified, subsequent encounter
  • T26.42XS — Burn of left eye and adnexa, part unspecified, sequela
  • T26.5 — Corrosion of eyelid and periocular area
  • T26.50 — Corrosion of unspecified eyelid and periocular area
  • T26.50XA — Corrosion of unspecified eyelid and periocular area, initial encounter

View all codes in the T26 family