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ICD-10-CM 2027

ICD-10 code for rectum corrosion

T28.7

Corrosion of other parts of alimentary tract

Header — needs a more specific code

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

About coding rectum corrosion

The ICD-10-CM code for rectum corrosion is T28.7 (Corrosion of other parts of alimentary tract).

Within T28, choose T28.7 (Corrosion of other parts of alimentary tract) only when documentation doesn't support a more specific option: burn of mouth and pharynx (T28.0), burn of esophagus (T28.1), burn of other parts of alimentary tract (T28.2), burn of internal genitourinary organs (T28.3), burns of other and unspecified internal organs (T28.4), corrosion of mouth and pharynx (T28.5), corrosion of esophagus (T28.6), corrosion of internal genitourinary organs (T28.8) 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 rectum corrosion ICD-10 codes

What is the ICD-10 code for rectum corrosion?

T28.7 — Corrosion of other parts of alimentary tract (a header code; report a more specific subcode).

Is T28.7 billable?

No. T28.7 is a header code. Report one of its more specific subcodes instead.