ICD-10-CM · FY 2026 APRIL UPDATE

S56.42

Laceration of extensor muscle, fascia and tendon of other and unspecified finger 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
S56.421	Laceration of extensor muscle, fascia and tendon of right index finger at forearm level	Category
S56.421A	Laceration of extensor muscle, fascia and tendon of right index finger at forearm level, initial encounter	Billable
S56.421D	Laceration of extensor muscle, fascia and tendon of right index finger at forearm level, subsequent encounter	Billable
S56.421S	Laceration of extensor muscle, fascia and tendon of right index finger at forearm level, sequela	Billable
S56.422	Laceration of extensor muscle, fascia and tendon of left index finger at forearm level	Category
S56.422A	Laceration of extensor muscle, fascia and tendon of left index finger at forearm level, initial encounter	Billable
S56.422D	Laceration of extensor muscle, fascia and tendon of left index finger at forearm level, subsequent encounter	Billable
S56.422S	Laceration of extensor muscle, fascia and tendon of left index finger at forearm level, sequela	Billable
S56.423	Laceration of extensor muscle, fascia and tendon of right middle finger at forearm level	Category
S56.423A	Laceration of extensor muscle, fascia and tendon of right middle finger at forearm level, initial encounter	Billable
S56.423D	Laceration of extensor muscle, fascia and tendon of right middle finger at forearm level, subsequent encounter	Billable
S56.423S	Laceration of extensor muscle, fascia and tendon of right middle finger at forearm level, sequela	Billable
S56.424	Laceration of extensor muscle, fascia and tendon of left middle finger at forearm level	Category
S56.424A	Laceration of extensor muscle, fascia and tendon of left middle finger at forearm level, initial encounter	Billable
S56.424D	Laceration of extensor muscle, fascia and tendon of left middle finger at forearm level, subsequent encounter	Billable
S56.424S	Laceration of extensor muscle, fascia and tendon of left middle finger at forearm level, sequela	Billable
S56.425	Laceration of extensor muscle, fascia and tendon of right ring finger at forearm level	Category
S56.425A	Laceration of extensor muscle, fascia and tendon of right ring finger at forearm level, initial encounter	Billable
S56.425D	Laceration of extensor muscle, fascia and tendon of right ring finger at forearm level, subsequent encounter	Billable
S56.425S	Laceration of extensor muscle, fascia and tendon of right ring finger at forearm level, sequela	Billable
S56.426	Laceration of extensor muscle, fascia and tendon of left ring finger at forearm level	Category
S56.426A	Laceration of extensor muscle, fascia and tendon of left ring finger at forearm level, initial encounter	Billable
S56.426D	Laceration of extensor muscle, fascia and tendon of left ring finger at forearm level, subsequent encounter	Billable
S56.426S	Laceration of extensor muscle, fascia and tendon of left ring finger at forearm level, sequela	Billable
S56.427	Laceration of extensor muscle, fascia and tendon of right little finger at forearm level	Category
S56.427A	Laceration of extensor muscle, fascia and tendon of right little finger at forearm level, initial encounter	Billable
S56.427D	Laceration of extensor muscle, fascia and tendon of right little finger at forearm level, subsequent encounter	Billable
S56.427S	Laceration of extensor muscle, fascia and tendon of right little finger at forearm level, sequela	Billable
S56.428	Laceration of extensor muscle, fascia and tendon of left little finger at forearm level	Category
S56.428A	Laceration of extensor muscle, fascia and tendon of left little finger at forearm level, initial encounter	Billable

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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.