ICD-10 Code G72.3 – Periodic paralysis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G72.3 – Periodic paralysis
What it is
G72.3 identifies periodic paralysis, a disorder marked by recurrent episodes of muscle weakness or paralysis. The episodes are usually temporary, and documentation may specify a familial or acquired form.
Clinical signs
Typical findings include sudden, intermittent weakness affecting limb muscles, sometimes after rest, exercise, or dietary triggers. Clinical features vary; refer to documentation.
When to use this code
Use G72.3 when the provider documents periodic paralysis as the diagnosis, including recurrent attacks of transient weakness or paralysis. Apply it when the record clearly identifies the condition rather than a nonspecific weakness complaint. If the note suggests another neuromuscular disorder, check documentation before coding.
Do not use for
Do not use this code for generalized weakness, fatigue, or paralysis from another confirmed cause. If the cause is unclear or another disorder is documented, check documentation.
Coding tip
Code G72.3 only when the diagnosis is explicitly stated; do not infer periodic paralysis from symptoms alone.