S86.101

⚠ Non-billable (Header)

Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg

Injury, poisoning and certain other consequences of external causes (S00-T88)

⚠️ This is a category header code — not billable. Use a more specific child code below.

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⚠️ Excludes2

inherited

Rules inherited from parent codes.

S86

• injury of muscle, fascia and tendon at ankle (S96.-)
• injury of patellar ligament (tendon) (S76.1-)
• sprain of joints and ligaments of knee (S83.-)

Child Codes (3)

S86.101AUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, initial encounter✓ Billable S86.101DUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, subsequent encounter✓ Billable S86.101SUnspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg, sequela✓ Billable

Clinical Description

ICD-10-CM code S86.101 represents unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg. This code falls under the Injury, poisoning and certain other consequences of external causes (S00-T88) classification. It is a non-billable category header code. A more specific child code from the list below must be used for billing and reimbursement purposes.

This is a 7-character code at the 6th level of specificity. There are 3 more specific child codes under S86.101.

Frequently Asked Questions

What is ICD-10 code S86.101?

ICD-10-CM code S86.101 is "Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, right leg". It belongs to the category: Injury, poisoning and certain other consequences of external causes (S00-T88).

Is S86.101 a billable ICD-10 code?

No, S86.101 is a non-billable header code. A more specific child code must be used for billing.

Can S86.101 be coded with other codes?

S86.101 has 3 Excludes2 note(s). These conditions can be coded together if both are documented in the patient record.

Related Codes in S86.10

Other codes in the same category that may be relevant for differential coding:

S86.102Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, left leg S86.109Unspecified injury of other muscle(s) and tendon(s) of posterior muscle group at lower leg level, unspecified leg

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Code Information

CodeS86.101

BillableNo — Header code

ParentS86.10

CategoryInjury, poisoning and certain other consequences of external causes (S00-T88)

Excludes10 rule(s)

Excludes23 note(s)

Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)