M79.661 Pain in right lower leg

Billable ICD-10-CM code, FY2026.

Applies from M79 Other and unspecified soft tissue disorders, not elsewhere classified

Excludes1 (never code together)

• psychogenic rheumatism (F45.8)
• soft tissue pain, psychogenic (F45.41)

Applies from M79.6 Pain in limb, hand, foot, fingers and toes

Excludes2 (not included here)

• pain in joint (M25.5-)

MS-DRG index

Defines the logic of DRG(s) 555-556 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 729.5 Pain in limb (approximate)

Code annotations containing back-references to M79.661

Back-references to M79.6

• Type 2 Excludes: G89 Pain, not elsewhere classified ("limb pain (M79.6-)")
• Type 2 Excludes: M25.5 Pain in joint ("pain in limb (M79.6-)")
• Type 2 Excludes: R29.89 Other symptoms and signs involving the musculoskeletal system ("pain in limb (M79.6-)")
• Type 1 Excludes: R52 Pain, unspecified ("limb pain (M79.6-)")

Nearby codes

• M79.65 Pain in thigh
• M79.651 Pain in right thigh
• M79.652 Pain in left thigh
• M79.659 Pain in unspecified thigh
• M79.66 Pain in lower leg
• M79.661 Pain in right lower leg (this code)
• M79.662 Pain in left lower leg
• M79.669 Pain in unspecified lower leg
• M79.67 Pain in foot and toes
• M79.671 Pain in right foot
• M79.672 Pain in left foot