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G57.7

⚠ Non-billable (Header)

Causalgia of lower limb

Diseases of the nervous system (G00-G99)

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

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Also Known As

Complex regional pain syndrome II of lower limb

❌ Excludes1

direct

Cannot be coded with G57.7

  • • 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 upper limb (G56.4-)
  • • reflex sympathetic dystrophy of lower limb (G90.52-)
  • • reflex sympathetic dystrophy of upper limb (G90.51-)

❌ Excludes1

inherited from G57

Rules from parent category G57: Mononeuropathies of lower limb

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

Child Codes (4)

G57.70Causalgia of unspecified lower limbG57.71Causalgia of right lower limbG57.72Causalgia of left lower limbG57.73Causalgia of bilateral lower limbs

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Code Information

CodeG57.7
BillableNo — Header code
ParentG57
CategoryDiseases of the nervous system (G00-G99)
Excludes16 rule(s)
Excludes20 note(s)
Child codes4

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)