ICD-10 Code A36.82 – Diphtheritic radiculomyelitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code A36.82 – Diphtheritic radiculomyelitis
What it is
A36.82 identifies radiculomyelitis caused by diphtheria toxin. Use it when the record documents spinal nerve root and spinal cord involvement linked to diphtheria.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include weakness, sensory changes, and neurologic deficits consistent with radiculomyelitis in the setting of diphtheria infection.
When to use this code
Use this code when the provider specifically documents diphtheritic radiculomyelitis or confirms neurologic involvement from diphtheria. It may apply during acute illness or when sequelae are being evaluated, if the condition is still described as diphtheritic.
Check documentation for the exact neurologic diagnosis and causal link to diphtheria. Code the confirmed condition, not a nonspecific weakness or neuropathy without that attribution.
Do not use for
Do not use this code for ordinary radiculitis, myelitis, or peripheral neuropathy without diphtheria. Also avoid it when diphtheria is suspected but not documented as the cause.
Coding tip
Verify both the neurologic manifestation and the diphtheria linkage in the note before assigning A36.82.