High levels of TSH is an indicator that your thyroid is not producing enough hormones, like thyroxine (T4) and or triiodothyronine (T3). This hormonal imbalance is called primary hypothyroidism. Sometimes high TSH causes a decrease in thyroid hormones, but they are still in normal range.Jan 22, 2021
9: Hypothyroidism, unspecified.
TSH is also used to evaluate patients who are suspected to have other thyroid disorders, such as goiter, thyroid nodule, thyroid cancer, Graves' disease, or Hashimoto's thyroiditis. These disorders can cause hypothyroidism or hyperthyroidism.Nov 9, 2021
ICD-Code E03. 9 is a billable ICD-10 code used for healthcare diagnosis reimbursement of Hypothyroidism, Unspecified. Its corresponding ICD-9 code is 244.9.
ICD-10 | Other fatigue (R53. 83)
The test, called a thyroid function test, looks at levels of thyroid-stimulating hormone (TSH) and thyroxine (T4) in the blood. Doctors may refer to this as "free" T4 (FT4). A high level of TSH and a low level of T4 in the blood could mean you have an underactive thyroid.