G47.1

Header — not billable

Hypersomnia

The ICD-10 code for hypersomnia is G47.1.

G47.1 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 6 more specific codes below.

Clinical notes

Excludes2 (not included here)

An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.

alcohol-related hypersomnia (F10.182, F10.282, F10.982)
drug-related hypersomnia (F11.182, F11.282, F11.982, F13.182, F13.282, F13.982, F14.182, F14.282, F14.982, F15.182, F15.282, F15.982, F19.182, F19.282, F19.982)
hypersomnia due to a mental disorder (F51.13)
hypersomnia not due to a substance or known physiological condition (F51.1-)
primary hypersomnia (F51.11)
sleep apnea (G47.3-)

Documentation support

General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.

•This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
•As a general rule, code to the highest level of specificity supported by the documentation in the medical record.

G47.1

Clinical notes

Excludes2 (not included here)

Documentation support

Child codes under G47.1

Related codes in this category