ICD-10-CM · FY 2026 APRIL UPDATE

S66.52

Laceration of intrinsic 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
S66.520	Laceration of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level	Category
S66.520A	Laceration of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level, initial encounter	Billable
S66.520D	Laceration of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level, subsequent encounter	Billable
S66.520S	Laceration of intrinsic muscle, fascia and tendon of right index finger at wrist and hand level, sequela	Billable
S66.521	Laceration of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level	Category
S66.521A	Laceration of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, initial encounter	Billable
S66.521D	Laceration of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, subsequent encounter	Billable
S66.521S	Laceration of intrinsic muscle, fascia and tendon of left index finger at wrist and hand level, sequela	Billable
S66.522	Laceration of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level	Category
S66.522A	Laceration of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level, initial encounter	Billable
S66.522D	Laceration of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level, subsequent encounter	Billable
S66.522S	Laceration of intrinsic muscle, fascia and tendon of right middle finger at wrist and hand level, sequela	Billable
S66.523	Laceration of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level	Category
S66.523A	Laceration of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level, initial encounter	Billable
S66.523D	Laceration of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level, subsequent encounter	Billable
S66.523S	Laceration of intrinsic muscle, fascia and tendon of left middle finger at wrist and hand level, sequela	Billable
S66.524	Laceration of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level	Category
S66.524A	Laceration of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level, initial encounter	Billable
S66.524D	Laceration of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level, subsequent encounter	Billable
S66.524S	Laceration of intrinsic muscle, fascia and tendon of right ring finger at wrist and hand level, sequela	Billable
S66.525	Laceration of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level	Category
S66.525A	Laceration of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level, initial encounter	Billable
S66.525D	Laceration of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level, subsequent encounter	Billable
S66.525S	Laceration of intrinsic muscle, fascia and tendon of left ring finger at wrist and hand level, sequela	Billable
S66.526	Laceration of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level	Category
S66.526A	Laceration of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level, initial encounter	Billable
S66.526D	Laceration of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level, subsequent encounter	Billable
S66.526S	Laceration of intrinsic muscle, fascia and tendon of right little finger at wrist and hand level, sequela	Billable
S66.527	Laceration of intrinsic muscle, fascia and tendon of left little finger at wrist and hand level	Category
S66.527A	Laceration of intrinsic 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.