You are here

Hypothyroidism C015

Last amended 
26 June 2015
Current RMA Instruments:
Reasonable Hypothesis SOP
29 of 2013
Balance of Probabilities SOP
30 of 2013
Changes from Previous Instruments:

SOP Bulletin 165

ICD Coding:
  • ICD-9-CM Codes: 244.0-244-9
  • ICD-10-AM Codes: E03, E89.00

A pathology where there is decreased level of thyroid hormone in the blood with symptoms or signs of hypothyroidism. If the decrease in thyroid hormone is due to a thyroid problem it is called primary hypothyroidism, and if it is due to the hypothalamus or pituitary failure it is called secondary hypothyroidism or central hypothyroidism.

Is specific diagnostic evidence required to apply the SOP? – No. 

Diagnosis is made by blood test showing decreased levels of thyroxine.  The appropriate specialist is an endocrinologist.

Are there sub-factors that require specific information? – No.
Additional diagnoses covered by SOP
  • Myxedema
  • Secondary hypothyroidism
Conditions excluded from SOP
  • Congenital hypothyroidism, ICD code 243
  • Congenital iodine deficiency syndrome, ICD code 243
  • Hashimoto’s thyroiditis, ICD code 245.2
  • Hyperthyroidism, ICD code 242.9
  • Sick euthyroid syndrome, ICD code 790.94
  • Subclinical hypothyroidism (N.I.F.)
  • Transient hypothyroidism during recovery form non-thyroidal illness
Unconfirmed diagnosis

If, after considering the above information you are unable to apply the SOP, 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 investigations may be useful in establishing the from treating specialist

  • results of thyroid hormone testing