Sleep disorders not due to a substance or known physiol cond (F51)

ICD-10 Index
- Mental and behavioural disorders (F00–F99)
  - Behavioral syndromes associated with physiological disturbances and physical factors (F50-F59)
    - - F51 - Sleep disorders not due to a substance or known physiol cond NON-BILLABLE CODE
      - F51.0 - Insomnia not due to a substance or known physiol condition NON-BILLABLE CODE
      - F51.01 - Primary insomnia BILLABLE CODE
      - F51.02 - Adjustment insomnia BILLABLE CODE
      - F51.03 - Paradoxical insomnia BILLABLE CODE
      - F51.04 - Psychophysiologic insomnia BILLABLE CODE
      - F51.05 - Insomnia due to other mental disorder BILLABLE CODE
      - F51.09 - Oth insomnia not due to a substance or known physiol cond BILLABLE CODE
      - F51.1 - Hypersomnia not due to a substance or known physiol cond NON-BILLABLE CODE
      - F51.11 - Primary hypersomnia BILLABLE CODE
      - F51.12 - Insufficient sleep syndrome BILLABLE CODE
      - F51.13 - Hypersomnia due to other mental disorder BILLABLE CODE
      - F51.19 - Oth hypersomnia not due to a substance or known physiol cond BILLABLE CODE
      - F51.3 - Sleepwalking [somnambulism] BILLABLE CODE
      - F51.4 - Sleep terrors [night terrors] BILLABLE CODE
      - F51.5 - Nightmare disorder BILLABLE CODE
      - F51.8 - Oth sleep disord not due to a sub or known physiol cond BILLABLE CODE
      - F51.9 - Sleep disorder not due to a sub or known physiol cond, unsp BILLABLE CODE

Instructional Notations

Type 2 Excludes Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

organic sleep disorders G47