ICD-10-CM · FY 2026 APRIL UPDATE

S66.19

Other injury of flexor muscle, fascia and tendon of other and unspecified finger 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
S66.190	Other injury of flexor muscle, fascia and tendon of right index finger at wrist and hand level	Category
S66.190A	Other injury of flexor muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter	Billable
S66.190D	Other injury of flexor muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter	Billable
S66.190S	Other injury of flexor muscle, fascia and tendon of right index finger at wrist and hand level, sequela	Billable
S66.191	Other injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level	Category
S66.191A	Other injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter	Billable
S66.191D	Other injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter	Billable
S66.191S	Other injury of flexor muscle, fascia and tendon of left index finger at wrist and hand level, sequela	Billable
S66.192	Other injury of flexor muscle, fascia and tendon of right middle finger at wrist and hand level	Category
S66.192A	Other injury of flexor muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter	Billable
S66.192D	Other injury of flexor muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter	Billable
S66.192S	Other injury of flexor muscle, fascia and tendon of right middle finger at wrist and hand level, sequela	Billable
S66.193	Other injury of flexor muscle, fascia and tendon of left middle finger at wrist and hand level	Category
S66.193A	Other injury of flexor muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter	Billable
S66.193D	Other injury of flexor muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter	Billable
S66.193S	Other injury of flexor muscle, fascia and tendon of left middle finger at wrist and hand level, sequela	Billable
S66.194	Other injury of flexor muscle, fascia and tendon of right ring finger at wrist and hand level	Category
S66.194A	Other injury of flexor muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter	Billable
S66.194D	Other injury of flexor muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter	Billable
S66.194S	Other injury of flexor muscle, fascia and tendon of right ring finger at wrist and hand level, sequela	Billable
S66.195	Other injury of flexor muscle, fascia and tendon of left ring finger at wrist and hand level	Category
S66.195A	Other injury of flexor muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter	Billable
S66.195D	Other injury of flexor muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter	Billable
S66.195S	Other injury of flexor muscle, fascia and tendon of left ring finger at wrist and hand level, sequela	Billable
S66.196	Other injury of flexor muscle, fascia and tendon of right little finger at wrist and hand level	Category
S66.196A	Other injury of flexor muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter	Billable
S66.196D	Other injury of flexor muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter	Billable
S66.196S	Other injury of flexor muscle, fascia and tendon of right little finger at wrist and hand level, sequela	Billable
S66.197	Other injury of flexor muscle, fascia and tendon of left little finger at wrist and hand level	Category
S66.197A	Other injury of flexor muscle, fascia and tendon of left little finger at wrist and hand level, initial encounter	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.