ICD-10 Diagnosis Code R94.6

Abnormal results of thyroid function studies

Diagnosis Code R94.6

ICD-10: R94.6
Short Description: Abnormal results of thyroid function studies
Long Description: Abnormal results of thyroid function studies
This is the 2018 version of the ICD-10-CM diagnosis code R94.6

Valid for Submission
The code R94.6 is valid for submission for HIPAA-covered transactions.

Code Classification
  • Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00–R99)
    • Abnormal findings on diagnostic imaging and in function studies, without diagnosis (R90-R94)
      • Abnormal results of function studies (R94)

Information for Medical Professionals

According to ICD-10-CM guidelines this code should not to be used as a principal diagnosis code when a related definitive diagnosis has been established.
Diagnostic Related Groups
The diagnosis code R94.6 is grouped in the following Diagnostic Related Group(s) (MS-DRG V35.0)


Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.
  • 794.5 - Abn thyroid funct study

  • Abnormal thyroid hormone
  • Decreased thyroid hormone level
  • Euthyroid
  • Finding of thyroid function
  • Radioactive iodine uptake above reference range
  • Thyroid function tests abnormal
  • Thyroid hormone tests abnormal
  • Thyroid hormone tests low

Information for Patients

Thyroid Diseases

Your thyroid is a butterfly-shaped gland in your neck, just above your collarbone. It is one of your endocrine glands, which make hormones. Thyroid hormones control the rate of many activities in your body. These include how fast you burn calories and how fast your heart beats. All of these activities are your body's metabolism.

Thyroid problems include

  • Goiter - enlargement of the thyroid gland
  • Hyperthyroidism - when your thyroid gland makes more thyroid hormones than your body needs
  • Hypothyroidism - when your thyroid gland does not make enough thyroid hormones
  • Thyroid cancer
  • Thyroid nodules - lumps in the thyroid gland
  • Thyroiditis - swelling of the thyroid

To diagnose thyroid diseases, doctors use a medical history, physical exam, and thyroid tests. They sometimes also use a biopsy. Treatment depends on the problem, but may include medicines, radioiodine therapy, or thyroid surgery.

Dept. of Health and Human Services Office on Women's Health

  • Antithyroglobulin antibody (Medical Encyclopedia)
  • Antithyroid microsomal antibody (Medical Encyclopedia)
  • Fine needle aspiration of the thyroid (Medical Encyclopedia)
  • Goiter (Medical Encyclopedia)
  • Radioactive iodine uptake (Medical Encyclopedia)
  • Silent thyroiditis (Medical Encyclopedia)
  • Subacute thyroiditis (Medical Encyclopedia)
  • T3 test (Medical Encyclopedia)
  • T4 test (Medical Encyclopedia)
  • Thyroid gland removal (Medical Encyclopedia)
  • Thyroid nodule (Medical Encyclopedia)
  • Thyroid storm (Medical Encyclopedia)
  • Thyroid Tests - NIH (National Institute of Diabetes and Digestive and Kidney Diseases)
  • TSH test (Medical Encyclopedia)

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