ICD-10 Code for Pyknolepsy

The ICD-10-CM code for pyknolepsy is G40.A09 — Absence epileptic syndrome, not intractable, without status epilepticus. This is the code the Alphabetic Index gives for pyknolepsy with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).

Billable

Which pyknolepsy code should you use?

The Alphabetic Index lists 4 codes under Pyknolepsy. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.

By type

intractable	G40.A19	Absence epileptic syndrome, intractable, without status epilepticus
not intractable	G40.A09	Absence epileptic syndrome, not intractable, without status epilepticus

Pyknolepsy intractable

with status epilepticus	G40.A11	Absence epileptic syndrome, intractable, with status epilepticus
without status epilepticus	G40.A19	Absence epileptic syndrome, intractable, without status epilepticus

Pyknolepsy not intractable

with status epilepticus	G40.A01	Absence epileptic syndrome, not intractable, with status epilepticus
without status epilepticus	G40.A09	Absence epileptic syndrome, not intractable, without status epilepticus

Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources