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Anosmia F087

Last amended 
28 June 2015

Current RMA Instruments:

Reasonable Hypothesis SOP
118 of 2011
Balance of Probabilities SOP
119 of 2011
Changes from Previous Instruments:

SOP Bulletin 153

ICD Coding:
  • ICD-9-CM Codes: 781.1
  • ICD-10-AM Codes: R43.8

This SOP covers the permanent total loss of all smell sensation occurring from both nostrils. The SOP applies to loss of smell due to lesions of: the sensory epithelium in the top of the nasopharynx; the olfactory (1st cranial) nerves; and, the olfactory neural pathways in the brain.

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

This diagnosis should be based on ENT surgical specialist opinion.

Are there sub-factors that require specific information? – No.
Additional diagnoses covered by SOP
  • Complete, permanent loss of smell
Conditions excluded from SOP
  • Partial loss of smell
  • Temporary loss of smell
Unconfirmed diagnosis

If, after applying the above information, you are unable to confirm the diagnosis, you should then:

  1. seek medical officer advice about further investigation, or;
  2. generate a diagnostic report, or;
  3. re-encode the condition, if appropriate.

The following may be useful in establishing the diagnosis:

  • Report from ENT surgeon.