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M79.66

⚠ Non-billable (Header)

Pain in lower leg

Diseases of the musculoskeletal system and connective tissue (M00-M99)

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

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⚠️ Excludes2

inherited from M79.6

Rules from parent category M79.6: Pain in limb, hand, foot, fingers and toes

  • • pain in joint (M25.5-)

Child Codes (3)

M79.661Pain in right lower legM79.662Pain in left lower legM79.669Pain in unspecified lower leg

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Code Information

CodeM79.66
BillableNo — Header code
ParentM79.6
CategoryDiseases of the musculoskeletal system and connective tissue (M00-M99)
Excludes10 rule(s)
Excludes21 note(s)
Child codes3

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)