ICD-10-CM · FY 2026 APRIL UPDATE

S86.9

Injury of unspecified muscle and tendon at lower leg 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
S86.90	Unspecified injury of unspecified muscle and tendon at lower leg level	Category
S86.901	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg	Category
S86.901A	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter	Billable
S86.901D	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg, subsequent encounter	Billable
S86.901S	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, right leg, sequela	Billable
S86.902	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg	Category
S86.902A	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg, initial encounter	Billable
S86.902D	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg, subsequent encounter	Billable
S86.902S	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, left leg, sequela	Billable
S86.909	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg	Category
S86.909A	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, initial encounter	Billable
S86.909D	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, subsequent encounter	Billable
S86.909S	Unspecified injury of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, sequela	Billable
S86.91	Strain of unspecified muscle and tendon at lower leg level	Category
S86.911	Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg	Category
S86.911A	Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter	Billable
S86.911D	Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg, subsequent encounter	Billable
S86.911S	Strain of unspecified muscle(s) and tendon(s) at lower leg level, right leg, sequela	Billable
S86.912	Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg	Category
S86.912A	Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg, initial encounter	Billable
S86.912D	Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg, subsequent encounter	Billable
S86.912S	Strain of unspecified muscle(s) and tendon(s) at lower leg level, left leg, sequela	Billable
S86.919	Strain of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg	Category
S86.919A	Strain of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, initial encounter	Billable
S86.919D	Strain of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, subsequent encounter	Billable
S86.919S	Strain of unspecified muscle(s) and tendon(s) at lower leg level, unspecified leg, sequela	Billable
S86.92	Laceration of unspecified muscle and tendon at lower leg level	Category
S86.921	Laceration of unspecified muscle(s) and tendon(s) at lower leg level, right leg	Category
S86.921A	Laceration of unspecified muscle(s) and tendon(s) at lower leg level, right leg, initial encounter	Billable
S86.921D	Laceration of unspecified muscle(s) and tendon(s) at lower leg level, right leg, subsequent 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.