G59 Mononeuropathy in diseases classified elsewhere

Billable

Block: Nerve, nerve root and plexus disorders (G50-G59)

Excludes 1 (cannot be coded together)

  • diabetic mononeuropathy (E08-E13 with .41)
  • syphilitic nerve paralysis (A52.19)
  • syphilitic neuritis (A52.15)
  • tuberculous mononeuropathy (A17.83)

Code First

  • underlying disease
This category is a complete, billable diagnosis code.

No additional specificity is required — submit G59 directly on claims and documentation without a subcode extension.

Last reviewed: September 2026