T26.50 Corrosion of unspecified eyelid and periocular area

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Corrosion of unspecified eyelid and periocular area is T26.50 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
T26-T28: Burns and corrosions confined to eye and internal organs (T26-T28)
Category T26
41 codes (30 billable)
FY2026 Status
Stable since FY2024

Official Coding Guidelines

Burn degree classification; T26-T28 site-only (not degree)

Burns are classified by depth as first degree (erythema), second degree (blistering), and third degree (full-thickness involvement). Burns of the eye and internal organs (T26-T28) are classified by site, but not by degree.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.d
Sequence blood vessel/nerve injury first (fragment)

injury is to the blood vessels or nerves, that injury should be sequenced first.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.19.b.2

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

T26 Burn and corrosion confined to eye and adnexa

Related Codes in T26

T26 Burn and corrosion confined to eye and adnexa T26.0 Burn of eyelid and periocular area T26.00 Burn of unspecified eyelid and periocular area T26.01 Burn of right eyelid and periocular area T26.02 Burn of left eyelid and periocular area T26.1 Burn of cornea and conjunctival sac T26.10 Burn of cornea and conjunctival sac, unspecified eye T26.11 Burn of cornea and conjunctival sac, right eye T26.12 Burn of cornea and conjunctival sac, left eye T26.2 Burn with resulting rupture and destruction of eyeball T26.20 Burn with resulting rupture and destruction of unspecified eyeball T26.21 Burn with resulting rupture and destruction of right eyeball T26.22 Burn with resulting rupture and destruction of left eyeball T26.3 Burns of other specified parts of eye and adnexa T26.30 Burns of other specified parts of unspecified eye and adnexa T26.31 Burns of other specified parts of right eye and adnexa T26.32 Burns of other specified parts of left eye and adnexa T26.4 Burn of eye and adnexa, part unspecified T26.40 Burn of unspecified eye and adnexa, part unspecified T26.41 Burn of right eye and adnexa, part unspecified
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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