G56.4 Causalgia of upper limb

Non-billable header with 4 child codes.

Applicable to

• Complex regional pain syndrome II of upper limb

Excludes1 (never code together)

• complex regional pain syndrome I of lower limb (G90.52-)
• complex regional pain syndrome I of upper limb (G90.51-)
• complex regional pain syndrome II of lower limb (G57.7-)
• reflex sympathetic dystrophy of lower limb (G90.52-)
• reflex sympathetic dystrophy of upper limb (G90.51-)

Applies from G56 Mononeuropathies of upper limb

Excludes1 (never code together)

• current traumatic nerve disorder - see nerve injury by body region

Codes under G56.4

• G56.40 Causalgia of unspecified upper limb
• G56.41 Causalgia of right upper limb
• G56.42 Causalgia of left upper limb
• G56.43 Causalgia of bilateral upper limbs

Code annotations containing back-references to G56.4

Back-references to G56.4

• Type 1 Excludes: G57.7 Causalgia of lower limb ("complex regional pain syndrome II of upper limb (G56.4-)")
• Type 1 Excludes: G89.2 Chronic pain, not elsewhere classified ("causalgia, upper limb (G56.4-)")
• Type 1 Excludes: G89.2 Chronic pain, not elsewhere classified ("complex regional pain syndrome II, upper limb (G56.4-)")
• Type 1 Excludes: G90.5 Complex regional pain syndrome I (CRPS I) ("causalgia of upper limb (G56.4-)")
• Type 1 Excludes: G90.5 Complex regional pain syndrome I (CRPS I) ("complex regional pain syndrome II of upper limb (G56.4-)")
• Type 1 Excludes: M89.0 Algoneurodystrophy ("causalgia, upper limb (G56.4-)")
• Type 1 Excludes: M89.0 Algoneurodystrophy ("complex regional pain syndrome II, upper limb (G56.4-)")

Back-references to G56

• Type 1 Excludes: M79.2 Neuralgia and neuritis, unspecified ("mononeuropathies (G56-G58)")

Diagnosis Index entries for G56.4

• Causalgia (upper limb)

Nearby codes

• G56.3 Lesion of radial nerve
• G56.30 Lesion of radial nerve, unspecified upper limb
• G56.31 Lesion of radial nerve, right upper limb
• G56.32 Lesion of radial nerve, left upper limb
• G56.33 Lesion of radial nerve, bilateral upper limbs
• G56.4 Causalgia of upper limb (this code)
• G56.40 Causalgia of unspecified upper limb
• G56.41 Causalgia of right upper limb
• G56.42 Causalgia of left upper limb
• G56.43 Causalgia of bilateral upper limbs
• G56.8 Other specified mononeuropathies of upper limb