S56.39

Other injury of extensor or abductor muscles, fascia and tendons of thumb at forearm level

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
S56.391	Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level	Category
S56.391A	Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, initial encounter	Billable
S56.391D	Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, subsequent encounter	Billable
S56.391S	Other injury of extensor or abductor muscles, fascia and tendons of right thumb at forearm level, sequela	Billable
S56.392	Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level	Category
S56.392A	Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, initial encounter	Billable
S56.392D	Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, subsequent encounter	Billable
S56.392S	Other injury of extensor or abductor muscles, fascia and tendons of left thumb at forearm level, sequela	Billable
S56.399	Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level	Category
S56.399A	Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, initial encounter	Billable
S56.399D	Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, subsequent encounter	Billable
S56.399S	Other injury of extensor or abductor muscles, fascia and tendons of unspecified thumb at forearm level, 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.