G40.C09 — Lafora progressive myoclonus epilepsy, not intractable, without status epilepticus
G40.C09 is a billable, specific ICD-10-CM code for lafora progressive myoclonus epilepsy, not intractable, without status epilepticus. It is valid for submission on a claim.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Lafora progressive myoclonus epilepsy NOS
Risk adjustment
G40.C09 risk-adjusts. Under the CMS-HCC V28 model it maps to this category:
- HCC 201 Seizure Disorders and Convulsions0.245 RAF
Coefficient shown for the Community Non-dual Aged segment. A higher HCC in the same hierarchy will suppress this one, so capturing it does not always add score.
Medicare coverage
G40.C09 is named in 1 Medicare coverage policy — 1 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A56619Billing and Coding: Nerve Conduction Studies and Electromyography
How G40.C09 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to G40.C09.
- Lafora disease
- Disease, diseased›Lafora body
- Epilepsy, epileptic, epilepsia›Lafora progressive myoclonus
- Epilepsy, epileptic, epilepsia›progressive myoclonic›Lafora
- Epilepsy, epileptic, epilepsia›myoclonus, myoclonic›progressive›Lafora
- Epilepsy, epileptic, epilepsia›myoclonus, myoclonic›progressive›Lafora›not intractable
- Epilepsy, epileptic, epilepsia›myoclonus, myoclonic›progressive›Lafora›not intractable›without status epilepticus
Related codes at this level
Codes that share G40.C0. If G40.C09 is not quite right, the correct code is usually one of these.
Questions about G40.C09
- Is G40.C09 a billable ICD-10-CM code?
- Yes. G40.C09 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does G40.C09 sit in the tabular list?
- Diseases of the nervous system (G00-G99), in the block Episodic and paroxysmal disorders (G40-G47).