Block · Chapter 6

G40-G47 Episodic and paroxysmal disorders (G40-G47)

Block G40-G47 groups 6 categories with 205 billable codes in FY2027.

Where it sits

Neighbouring blocks

Categories in G40-G47

G40
Epilepsy and recurrent seizures
Pyknolepsy → G40.A09
- 58 billable codes
- 47 CC
- 3 MCC
- 58 with HCC
G43
Migraine
Migraine (idiopathic) → G43.909
- 48 billable codes
- 4 CC
G44
Other headache syndromes
Sluder's neuralgia (syndrome) → G44.89
- 40 billable codes
G45
Transient cerebral ischemic attacks and related syndromes
Syndromebasilar artery → G45.0
- 7 billable codes
- 6 CC
G46
Vascular syndromes of brain in cerebrovascular diseases
Avellis' syndrome → G46.8
- 9 billable codes
- 3 CC
G47
Sleep disorders
Narcolepsy → G47.419
- 43 billable codes

Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure) → G40 (165 entries)
Migraine (idiopathic) → G43 (130 entries)
Headache → G43, G44 (68 entries)
Syndrome → G40, G43, G44, G45, G46, G47 (60 entries)
Disorder (of) → G40, G47 (23 entries)
Seizure(s) → G40 (22 entries)
Hemicrania → G43, G44 (11 entries)
Neuralgia, neuralgic (acute) → G44 (10 entries)
Apnea, apneic (of) (spells) → G47 (8 entries)
Hypersomnia (organic) → G47 (8 entries)
Kozhevnikof's epilepsy → G40 (7 entries)
Lennox-Gastaut syndrome → G40 (7 entries)
Paralysis, paralytic (complete) (incomplete) → G46, G47 (7 entries)
Pyknolepsy → G40 (7 entries)
Cephalgia, cephalalgia → G44 (6 entries)

+62 more main terms; the search box finds them by word.

Chapter 6 instructions (Excludes2 8): printed on the chapter 6 page.