ICD-10-CM · FY 2026 APRIL UPDATE

S66.32

Laceration of extensor 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
S66.320	Laceration of extensor muscle, fascia and tendon of right index finger at wrist and hand level	Category
S66.320A	Laceration of extensor muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter	Billable
S66.320D	Laceration of extensor muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter	Billable
S66.320S	Laceration of extensor muscle, fascia and tendon of right index finger at wrist and hand level, sequela	Billable
S66.321	Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level	Category
S66.321A	Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter	Billable
S66.321D	Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter	Billable
S66.321S	Laceration of extensor muscle, fascia and tendon of left index finger at wrist and hand level, sequela	Billable
S66.322	Laceration of extensor muscle, fascia and tendon of right middle finger at wrist and hand level	Category
S66.322A	Laceration of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter	Billable
S66.322D	Laceration of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter	Billable
S66.322S	Laceration of extensor muscle, fascia and tendon of right middle finger at wrist and hand level, sequela	Billable
S66.323	Laceration of extensor muscle, fascia and tendon of left middle finger at wrist and hand level	Category
S66.323A	Laceration of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter	Billable
S66.323D	Laceration of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter	Billable
S66.323S	Laceration of extensor muscle, fascia and tendon of left middle finger at wrist and hand level, sequela	Billable
S66.324	Laceration of extensor muscle, fascia and tendon of right ring finger at wrist and hand level	Category
S66.324A	Laceration of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter	Billable
S66.324D	Laceration of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter	Billable
S66.324S	Laceration of extensor muscle, fascia and tendon of right ring finger at wrist and hand level, sequela	Billable
S66.325	Laceration of extensor muscle, fascia and tendon of left ring finger at wrist and hand level	Category
S66.325A	Laceration of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter	Billable
S66.325D	Laceration of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter	Billable
S66.325S	Laceration of extensor muscle, fascia and tendon of left ring finger at wrist and hand level, sequela	Billable
S66.326	Laceration of extensor muscle, fascia and tendon of right little finger at wrist and hand level	Category
S66.326A	Laceration of extensor muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter	Billable
S66.326D	Laceration of extensor muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter	Billable
S66.326S	Laceration of extensor muscle, fascia and tendon of right little finger at wrist and hand level, sequela	Billable
S66.327	Laceration of extensor muscle, fascia and tendon of left little finger at wrist and hand level	Category
S66.327A	Laceration of extensor 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.