M89.021 Algoneurodystrophy, right upper arm

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 M89.021

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

• M89.01 Algoneurodystrophy, shoulder
• M89.011 Algoneurodystrophy, right shoulder
• M89.012 Algoneurodystrophy, left shoulder
• M89.019 Algoneurodystrophy, unspecified shoulder
• M89.02 Algoneurodystrophy, upper arm
• M89.021 Algoneurodystrophy, right upper arm (this code)
• M89.022 Algoneurodystrophy, left upper arm
• M89.029 Algoneurodystrophy, unspecified upper arm
• M89.03 Algoneurodystrophy, forearm
• M89.031 Algoneurodystrophy, right forearm
• M89.032 Algoneurodystrophy, left forearm