2024 ICD-10-CM Diagnosis Code E03.9: Hypothyroidism, unspecified (2024)

1. ICD-10-CM Codes
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2. E00-E89
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3. E00-E07
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4. E03-
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5. 2024 ICD-10-CM Diagnosis Code E03.9

Hypothyroidism, unspecified

2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code

• E03.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursem*nt purposes.
• The 2024 edition of ICD-10-CM E03.9 became effective on October 1, 2023.
• This is the American ICD-10-CM version of E03.9 - other international versions of ICD-10 E03.9 may differ.

Approximate Synonyms

• Acquired hypothyroidism
• Cerebral degeneration due to hypothyroidism
• Cerebral degeneration in hypothyroidism
• Hypothyroid (low level of thyroid hormone) in childbirth
• Hypothyroid (low thyroid) in pregnancy
• Hypothyroidism
• Hypothyroidism (low thyroid)
• Hypothyroidism (low thyroid), acquired
• Hypothyroidism in childbirth
• Hypothyroidism in pregnancy
• Hypothyroidism postpartum
• Myxedema
• Postpartum (after childbirth) hypothyroidism
• Subclinical hypothyroidism

Clinical Information

• A condition characterized by a dry, waxy type of swelling (edema) with abnormal deposits of mucopolysaccharides in the skin and other tissues. It is caused by a deficiency of thyroid hormones. The skin becomes puffy around the eyes and on the cheeks. The face is dull and expressionless with thickened nose and lips.
• A condition in which the production of thyroid hormone by the thyroid gland is diminished. Signs and symptoms of hypothyroidism include low metabolic rate, tendency to weight gain, somnolence and sometimes myxedema. In the United States, the most common cause of hypothyroidism is hashimoto's thyroiditis, an autoimmune disorder.
• A disorder characterized by a decrease in production of thyroid hormone by the thyroid gland.
• A syndrome that results from abnormally low secretion of thyroid hormones from the thyroid gland, leading to a decrease in basal metabolic rate. In its most severe form, there is accumulation of mucopolysaccharides in the skin and edema, known as myxedema.
• Condition characterized by a dry, waxy type of swelling with abnormal deposits of mucin in the skin and other tissues; it is produced by a functional insufficiency of the thyroid gland, resulting in deficiency of thyroid hormone.
• Deficiency of thyroid gland activity; characterized by decreased basal metabolic rate, fatigue and lethargy, sensitivity to cold, and menstrual disturbances; untreated it progresses to myxedema; in infants severe hypothyroidism leads to cretinism.
• Too little thyroid hormone. Symptoms include weight gain, constipation, dry skin, and sensitivity to the cold.

ICD-10-CM E03.9 is grouped within Diagnostic Related Group(s) (MS-DRG v41.0):

• 643 Endocrine disorders with mcc
• 644 Endocrine disorders with cc
• 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
• 2024 (effective 10/1/2023): No change

Code annotations containing back-references to E03.9:

• Code First: D63.8, G32.8

  ICD-10-CM Diagnosis Code D63.8

  Anemia in other chronic diseases classified elsewhere

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code Manifestation Code

  Code First

  • underlying disease, such as:
  • diphyllobothriasis (B70.0)
  • hookworm disease (B76.0-B76.9)
  • hypothyroidism (E00.0-E03.9)
  • malaria (B50.0-B54)
  • symptomatic late syphilis (A52.79)
  • tuberculosis (A18.89)

  ICD-10-CM Diagnosis Code G32.8

  Other specified degenerative disorders of nervous system in diseases classified elsewhere

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Non-Billable/Non-Specific Code

  Code First

  • underlying disease, such as:
  • amyloidosis cerebral degeneration (E85.-)
  • cerebral degeneration (due to) hypothyroidism (E00.0-E03.9)
  • cerebral degeneration (due to) neoplasm (C00-D49)
  • cerebral degeneration (due to) vitamin B deficiency, except thiamine (E52-E53.-)

  Type 1 Excludes

  • superior hemorrhagic polioencephalitis [Wernicke's encephalopathy] (E51.2)
• Type 1 Excludes: L98.5

  ICD-10-CM Diagnosis Code L98.5

  Mucinosis of the skin

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code

  Applicable To

  • Focal mucinosis
  • Lichen myxedematosus
  • Reticular erythematous mucinosis

  Type 1 Excludes

  • focal oral mucinosis (K13.79)
  • myxedema (E03.9)

• Anemia (essential) (general) (hemoglobin deficiency) (infantile) (primary) (profound) D64.9

  ICD-10-CM Diagnosis Code D64.9

  Anemia, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code
  • due to (in) (with)
    • myxedema E03.9
• Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute) M19.90

  ICD-10-CM Diagnosis Code M19.90

  See Also

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  Unspecified osteoarthritis, unspecified site

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code

  Applicable To

  • Arthrosis NOS
  • Arthritis NOS
  • Osteoarthritis NOS
  • in (due to)
    • hypothyroidism NEC E03.9 - see also subcategory M14.8-
• Arthropathy M12.9 - see also Arthritis

  ICD-10-CM Diagnosis Code M12.9

  Arthropathy, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code
  • in (due to)
    • hypothyroidism E03.9
• Ataxia, ataxy, ataxic R27.0

  ICD-10-CM Diagnosis Code R27.0

  Ataxia, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code

  Type 1 Excludes

  • ataxia following cerebrovascular disease (I69. with final characters -93)
  • cerebellar (hereditary) G11.9

    ICD-10-CM Diagnosis Code G11.9

    Hereditary ataxia, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code

    Applicable To

    • Hereditary cerebellar ataxia NOS
    • Hereditary cerebellar degeneration
    • Hereditary cerebellar disease
    • Hereditary cerebellar syndrome
    • in
      • myxedema E03.9
• Atrophy, atrophic (of)
  • systemic affecting central nervous system
    • in
      • myxedema E03.9
• Cataract (cortical) (immature) (incipient) H26.9

  ICD-10-CM Diagnosis Code H26.9

  Unspecified cataract

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code
  • myxedema E03.9
• Degeneration, degenerative
  • brain (cortical) (progressive) G31.9

    ICD-10-CM Diagnosis Code G31.9

    Degenerative disease of nervous system, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code
    • in
      • myxedema E03.9
• Dementia (degenerative (primary)) (old age) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety) F03.90

  ICD-10-CM Diagnosis Code F03.90

  Unspecified dementia, unspecified severity, without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety

  2016 2017 2018 2019 2020 2021 2022 2023 - Revised Code 2024 Billable/Specific Code Adult Dx (15-124 years)

  Applicable To

  • Dementia NOS
  • in (due to)
    • hypothyroidism, acquired E03.9 - see also Dementia, in, diseases specified elsewhere
      • with behavioral disturbance E03.9 - see also Dementia, in, diseases specified elsewhere
• Hoffmann's syndrome E03.9
• Hypothyroidism (acquired) E03.9
• Insufficiency, insufficient
  • thyroid (gland) (acquired) E03.9
• Myopathy G72.9

  ICD-10-CM Diagnosis Code G72.9

  Myopathy, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 2024 Billable/Specific Code
  • in (due to)
    • hypothyroidism E03.9
    • myxedema E03.9
• Myxedema (adult) (idiocy) (infantile) (juvenile) E03.9 - see also Hypothyroidism

ICD-10-CM Codes Adjacent To E03.9

Reimbursem*nt claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.