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ICD-10-CM 2027

ICD-10 code for cornea corrosion

T26.6

Corrosion of cornea and conjunctival sac

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Corrosion (injury) (acid) (caustic) (chemical) (lime) (external) (internal) › cornea (and conjunctiva)”. Page updated September 29, 2026.

About coding cornea corrosion

The ICD-10-CM code for cornea corrosion is T26.6 (Corrosion of cornea and conjunctival sac).

Within T26 (burn and corrosion confined to eye and adnexa), T26.6 is specifically for corrosion of cornea and conjunctival sac. Related codes cover burn of eyelid and periocular area (T26.0), burn of cornea and conjunctival sac (T26.1), burn with resulting rupture and destruction of eyeball (T26.2), burns of other specified parts of eye and adnexa (T26.3), burn of eye and adnexa, part unspecified (T26.4), corrosion of eyelid and periocular area (T26.5), corrosion with resulting rupture and destruction of eyeball (T26.7), Corrosions of other specified parts of eye and adnexa (T26.8) and 1 more.

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

Code first: (T51-T65) to identify chemical and intent.

Common questions about cornea corrosion ICD-10 codes

What is the ICD-10 code for cornea corrosion?

T26.6 — Corrosion of cornea and conjunctival sac (a header code; report a more specific subcode).

Is T26.6 billable?

No. T26.6 is a header code. Report one of its more specific subcodes instead.