T24.40

Corrosion of unspecified degree of unspecified site of lower limb, except ankle and foot

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

CODE	DESCRIPTION	TYPE
T24.401	Corrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot	Category
T24.401A	Corrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot, initial encounter	Billable
T24.401D	Corrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot, subsequent encounter	Billable
T24.401S	Corrosion of unspecified degree of unspecified site of right lower limb, except ankle and foot, sequela	Billable
T24.402	Corrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot	Category
T24.402A	Corrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot, initial encounter	Billable
T24.402D	Corrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot, subsequent encounter	Billable
T24.402S	Corrosion of unspecified degree of unspecified site of left lower limb, except ankle and foot, sequela	Billable
T24.409	Corrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot	Category
T24.409A	Corrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, initial encounter	Billable
T24.409D	Corrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, subsequent encounter	Billable
T24.409S	Corrosion of unspecified degree of unspecified site of unspecified lower limb, except ankle and foot, sequela	Billable

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.