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Narcolepsy F084

Last amended 
29 May 2015
Current RMA Instruments:
Reasonable Hypothesis SOP
7 of 2014
Balance of Probabilities SOP
8 of 2014
Changes from Previous Instruments:

SOP Bulletin 171

ICD Coding:
  • ICD-9-CM Codes: 347
  • CD-10-AM Codes: G47.4

This is a sleep disorder characterised by attacks of sleepiness not due to another medical condition or drug.

Is specific diagnostic evidence required to apply the SOP?Yes.

This is a complicated diagnosis which requires a formal sleep study and an opinion from a qualified sleep physician.

Are there sub-factors that require specific information? – No.
Additional diagnoses that may be covered by SOP (further information required)
  • Cataplexy
Conditions excluded from SOP
  • Obstructive sleep apnoea
  • Sleepiness due to drugs or other medical conditions.
Unconfirmed diagnosis

If, after applying the above information, you are unable to confirm the diagnosis, you should then seek medical officer advice about further investigation.