M89.079 Algoneurodystrophy, unspecified ankle and foot

Billable ICD-10-CM code, FY2026.

Applies from M89.0 Algoneurodystrophy

Applicable to

• Shoulder-hand syndrome
• Sudeck's atrophy

Excludes1 (never code together)

• causalgia, lower limb (G57.7-)
• causalgia, upper limb (G56.4-)
• complex regional pain syndrome II, lower limb (G57.7-)
• complex regional pain syndrome II, upper limb (G56.4-)
• reflex sympathetic dystrophy (G90.5-)

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 733.7 Algoneurodystrophy (approximate)

Code annotations containing back-references to M89.079

Back-references to M89.0

• Type 2 Excludes: M75 Shoulder lesions ("shoulder-hand syndrome (M89.0-)")
• Type 1 Excludes: M81 Osteoporosis without current pathological fracture ("Sudeck's atrophy (M89.0)")
• Type 1 Excludes: M81.6 Localized osteoporosis [Lequesne] ("Sudeck's atrophy (M89.0)")

Nearby codes

• M89.062 Algoneurodystrophy, left lower leg
• M89.069 Algoneurodystrophy, unspecified lower leg
• M89.07 Algoneurodystrophy, ankle and foot
• M89.071 Algoneurodystrophy, right ankle and foot
• M89.072 Algoneurodystrophy, left ankle and foot
• M89.079 Algoneurodystrophy, unspecified ankle and foot (this code)
• M89.08 Algoneurodystrophy, other site
• M89.09 Algoneurodystrophy, multiple sites
• M89.1 Physeal arrest
• M89.12 Physeal arrest, humerus
• M89.121 Complete physeal arrest, right proximal humerus