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ICD-10-CM · FY 2026 APRIL UPDATE

T20.5

Corrosion of first degree of head, face, and neck

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
T20.50Corrosion of first degree of head, face, and neck, unspecified siteCategory
T20.50XACorrosion of first degree of head, face, and neck, unspecified site, initial encounterBillable
T20.50XDCorrosion of first degree of head, face, and neck, unspecified site, subsequent encounterBillable
T20.50XSCorrosion of first degree of head, face, and neck, unspecified site, sequelaBillable
T20.51Corrosion of first degree of ear [any part, except ear drum]Category
T20.511Corrosion of first degree of right ear [any part, except ear drum]Category
T20.511ACorrosion of first degree of right ear [any part, except ear drum], initial encounterBillable
T20.511DCorrosion of first degree of right ear [any part, except ear drum], subsequent encounterBillable
T20.511SCorrosion of first degree of right ear [any part, except ear drum], sequelaBillable
T20.512Corrosion of first degree of left ear [any part, except ear drum]Category
T20.512ACorrosion of first degree of left ear [any part, except ear drum], initial encounterBillable
T20.512DCorrosion of first degree of left ear [any part, except ear drum], subsequent encounterBillable
T20.512SCorrosion of first degree of left ear [any part, except ear drum], sequelaBillable
T20.519Corrosion of first degree of unspecified ear [any part, except ear drum]Category
T20.519ACorrosion of first degree of unspecified ear [any part, except ear drum], initial encounterBillable
T20.519DCorrosion of first degree of unspecified ear [any part, except ear drum], subsequent encounterBillable
T20.519SCorrosion of first degree of unspecified ear [any part, except ear drum], sequelaBillable
T20.52Corrosion of first degree of lip(s)Category
T20.52XACorrosion of first degree of lip(s), initial encounterBillable
T20.52XDCorrosion of first degree of lip(s), subsequent encounterBillable
T20.52XSCorrosion of first degree of lip(s), sequelaBillable
T20.53Corrosion of first degree of chinCategory
T20.53XACorrosion of first degree of chin, initial encounterBillable
T20.53XDCorrosion of first degree of chin, subsequent encounterBillable
T20.53XSCorrosion of first degree of chin, sequelaBillable
T20.54Corrosion of first degree of nose (septum)Category
T20.54XACorrosion of first degree of nose (septum), initial encounterBillable
T20.54XDCorrosion of first degree of nose (septum), subsequent encounterBillable
T20.54XSCorrosion of first degree of nose (septum), sequelaBillable
T20.55Corrosion of first degree of scalp [any part]Category

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.