S66.90

Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand 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
S66.901	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand	Category
S66.901A	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, initial encounter	Billable
S66.901D	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, subsequent encounter	Billable
S66.901S	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, right hand, sequela	Billable
S66.902	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, left hand	Category
S66.902A	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, left hand, initial encounter	Billable
S66.902D	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, left hand, subsequent encounter	Billable
S66.902S	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, left hand, sequela	Billable
S66.909	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand	Category
S66.909A	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand, initial encounter	Billable
S66.909D	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand, subsequent encounter	Billable
S66.909S	Unspecified injury of unspecified muscle, fascia and tendon at wrist and hand level, unspecified hand, 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.