G57.70 – Causalgia of unspecified lower limb

ICD-10-CM 2027 diagnosis code · Nerve, nerve root and plexus disorders

Billable code

ICD-10-CM code G57.70
Code
G57.70 (claims format: G5770)
Description
Causalgia of unspecified lower limb
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
6. Diseases of the nervous system (G00-G99)
Block
G50-G59 Nerve, nerve root and plexus disorders
Parent codes
G57 › G57.7

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

G57 – Mononeuropathies of lower limb

Excludes1 (not coded here):
  • current traumatic nerve disorder - see nerve injury by body region

G57.7 – Causalgia of lower limb

Applicable to:
  • Complex regional pain syndrome II of lower limb
Excludes1 (not coded here):
  • 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-)

Block G50-G59

Excludes1 (not coded here):
  • current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
  • neuralgia NOS (M79.2)
  • neuritis NOS (M79.2)
  • peripheral neuritis in pregnancy (O26.82-)
  • radiculitis NOS (M54.1-)

Related codes in G57.7

Frequently asked questions

What is ICD-10 code G57.70?

G57.70 is the ICD-10-CM code for causalgia of unspecified lower limb, in the block G50-G59 (Nerve, nerve root and plexus disorders).

Is G57.70 a billable code?

Yes. G57.70 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does G57.70 belong to?

It belongs to category G57 – Mononeuropathies of lower limb.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.