ICD-10-CM · FY 2026 APRIL UPDATE

S86.1

Injury of other muscle(s) and tendon(s) of posterior muscle group 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
S86.10	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level	Category
S86.101	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg	Category
S86.101A	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter	Billable
S86.101D	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, subsequent encounter	Billable
S86.101S	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, sequela	Billable
S86.102	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg	Category
S86.102A	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, initial encounter	Billable
S86.102D	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, subsequent encounter	Billable
S86.102S	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, sequela	Billable
S86.109	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg	Category
S86.109A	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, initial encounter	Billable
S86.109D	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, subsequent encounter	Billable
S86.109S	Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, sequela	Billable
S86.11	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level	Category
S86.111	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg	Category
S86.111A	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter	Billable
S86.111D	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, subsequent encounter	Billable
S86.111S	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, sequela	Billable
S86.112	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg	Category
S86.112A	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, initial encounter	Billable
S86.112D	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, subsequent encounter	Billable
S86.112S	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg, sequela	Billable
S86.119	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg	Category
S86.119A	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, initial encounter	Billable
S86.119D	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, subsequent encounter	Billable
S86.119S	Strain of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg, sequela	Billable
S86.12	Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level	Category
S86.121	Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg	Category
S86.121A	Laceration of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter	Billable
S86.121D	Laceration of other muscle(s) and tendon(s) of posterior muscle group 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.