"" 2023|ICD-10 Diagnosis CODE: E03.9 Hypothyroidism Unspecified - Health and Fitness Informatics


2023|ICD-10 Diagnosis CODE: E03.9 Hypothyroidism Unspecified

ICD-10 hypothyroidism, unspecified:

  • ICD-Code E 03.9 is a billable ICD-10 code used for healthcare diagnosis recompense of hypothyroidism, indeterminate. Its equivalent ICD-9 code is 244.9.
  • The 2023 edition of ICD-10-CM E03.9 converted effectively on October 1, 2022.
  • This is the American ICD-10CM version of E03.9, other international versions of ICD-10 E03.9 may differ.

ICD-9 Code transition: 144.9

Billable: Yes

ICD-10 code for hypothyroidism:

ICD-10 E03.9 is the diagnosis code that can be used for hypothyroidism, unspecified. It is a type of thyroid gland disorder, a medical condition in which a thyroid gland produces less thyroid hormon

Approximate synonyms of ICD-10 hypothyroidism:

  • Hypothyroidism (Low thyroid) acquired
  • Hypothyroidism (Low thyroid)
  • Hypothyroidism in pregnancy
  • Hypothyroidism in childbirth
  • Hypothyroidism postpartum
  • Postpartum (after childbirth) hypothyroidism
  • Myxedema
  • Acquired hypothyroidism
  • Subclinical hypothyroidism
  • Hypothyroidism (Low thyroid) in pregnancy
  • Hypothyroidism (Low level of thyroid hormones) in childbirth
  • Cerebral degeneration in hypothyroidism
  • Cerebral due to hypothyroidism

Read more ICD-10 code for Post Procedural Hypothyroidism

  • ICD-10-CM E03.9 is grouped in Diagnostic Related Group(s) (MS-DRG v40.0)
  • 643 Endocrine disorders with cc
  • 544 Endocrine disorders with cc/mcc
  • 645 Endocrine disorders without cc/mcc 

Convert E03.9 to ICD-9-CM

Code History:

  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Code annotation containing back-references to E03.9  

Code First: G32.8

, D63.8

Type 1 Excludes: L98.5

Diagnosis Index entries containing back-references to E03.9 

Clinical information of low thyroid ICD-10:

  • Thyroid hormone deficit can cause edema (a dry waxy type of swelling) with atypical deposits of mucopolysaccharides in the skin and other tissues. Due to this condition,  skin around the cheeks and eyes turned puffy, your face looks dull and impassive and lips and nose become thicker.
  • In this condition, the thyroid gland produces a lesser amount of hormones.
  •  The sign and symptoms are somnolence, the tendency to weight gain, low metabolic.
  • This is a syndrome caused by the abnormally low secretion of thyroid hormone from the thyroid gland that can lead to a reduction in the metabolic rate of the body.
  • Myxedema is a severe form of this condition in which the accumulation of mucopolysaccharides happened in the edema and skin.
  • Decreased amounts of thyroid hormones, cause constipation, weight gain, sensitivity to the cold, dry skin, reduction in basal metabolic rate, disturbed menstrual cycle in females, fatigue, and lethargy.
  •  If this condition is left untreated it may progress into myxedema, in infants, severe hypothyroidism direct to cretinism.

General ICD-10 information:

ICD-10 codes are the product of the ICD 10th review. This medical classification is used to assist healthcare providers to code and identifying health conditions and this list is created by the WHO (World Health Organization). 

ICD  is needed by healthcare experts and physicians under the Health Insurance Portability and Accountability Act (HIPAA) and will use to replace all ICD-9 code sets.

Many other new diagnoses can be followed by using ICD-10 than with ICD-9. Some developed code sets, such as ICD-10-CM have over 70,000 codes.

Read more about What is Hypothyroidism or Underactive thyroid


Q. What is the ICD-10 code for specified hyperthyroidism?

A. The ICD-10 code for Hypothroidism specified  is E03.8 

Q. What is ICD-10 subclinical hyperthyroidism?

A. ICD-10 for hyperthyroidism is E05 Thyrotoxicosis.

Q. How do you code subclinical hypothyroidism?

A. The code for subclinical iodine-deficiency hypothyroidism is ICD-10 code E02. This is a medical classification as developed by the World Health Organization, under the series of  nutritional, endocrine, and metabolic diseases.   

Q. What does subclinical hypothyroidism mean?

A. A subclinical Hypothyroidism is described as elevated serum TSH (Thyroid      stimulating  hormone) concentration, in the presence of a normal serum free    T4  (thyroxine) concentration.

Q. Is subclinical hypothyroidism treated?

A. If TSH (Thyroid stimulation hormones) shows >10mlU/L treatment for subclinical hypothyroidism is indicated. If results show milder subclinical hypothyroidism, a wait-and-watch policy is promoted to see if normalization happens. However, if a person has cardiovascular risks with subclinical hypothyroidism levothyroxine is suggested by health experts.      

Read more 2023 ICD-10 code for Gastroesophageal Reflux

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