F51.12 Insufficient sleep syndrome
ICD-10-CM · CMS code reference
F51.12 is insufficient sleep syndrome, filed under hypersomnia not due to a substance or known physiological condition. If the record documents sleep deprivation instead, use Z72.820.
What to know
- Excludes1: F51.12 and Z72.820 (sleep deprivation) are not reported together. Choose the one the documentation supports.
Coding notes
From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.
Excludes1
Not coded together with this code. The exception is when the two conditions are unrelated to each other.
- sleep deprivation (Z72.820)
Excludes2
Not part of this code, but both can be coded when both are documented.
- 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 NOS (G47.10)
- hypersomnia due to known physiological condition (G47.10)
- idiopathic hypersomnia (G47.11, G47.12)
- narcolepsy (G47.4-)
- organic sleep disorders (G47.-)
Related codes
F51.04Psychophysiologic insomnia ICD-10-CMF51.05Insomnia due to other mental disorder ICD-10-CMF51.09Other insomnia not due to a substance or known physiological condition ICD-10-CMF51.11Primary hypersomnia ICD-10-CMF51.13Hypersomnia due to other mental disorder ICD-10-CMF51.19Other hypersomnia not due to a substance or known physiological condition ICD-10-CMF51.3Sleepwalking [somnambulism] ICD-10-CMF51.4Sleep terrors [night terrors] ICD-10-CM
Common questions
Is F51.12 a billable code?
Yes. F51.12 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.