2020 ICD-10-CM Diagnosis Code E03.9

Hypothyroidism, unspecified

    2016 2017 2018 2019 2020 Billable/Specific Code
  • E03.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM E03.9 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of E03.9 - other international versions of ICD-10 E03.9 may differ.
Applicable To
  • Myxedema NOS
The following code(s) above E03.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to E03.9:
  • E00-E89
    2020 ICD-10-CM Range E00-E89

    Endocrine, nutritional and metabolic diseases

    Note
    • All neoplasms, whether functionally active or not, are classified in Chapter 2. Appropriate codes in this chapter (i.e. E05.8, E07.0, E16-E31, E34.-) may be used as additional codes to indicate either functional activity by neoplasms and ectopic endocrine tissue or hyperfunction and hypofunction of endocrine glands associated with neoplasms and other conditions classified elsewhere.
    Type 1 Excludes
    • transitory endocrine and metabolic disorders specific to newborn (P70-P74)
    Endocrine, nutritional and metabolic diseases
  • E03
    ICD-10-CM Diagnosis Code E03

    Other hypothyroidism

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • iodine-deficiency related hypothyroidism (E00-E02)
    • postprocedural hypothyroidism (E89.0)
    Other hypothyroidism
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 v37.0):
  • 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
Code annotations containing back-references to E03.9:
  • Code First: G32.8
    , D63.8
    ICD-10-CM Diagnosis Code G32.8

    Other specified degenerative disorders of nervous system in diseases classified elsewhere

      2016 2017 2018 2019 2020 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)
    ICD-10-CM Diagnosis Code D63.8

    Anemia in other chronic diseases classified elsewhere

      2016 2017 2018 2019 2020 Billable/Specific Code Manifestation Code
    Code First
  • Type 1 Excludes: L98.5
    ICD-10-CM Diagnosis Code L98.5

    Mucinosis of the skin

      2016 2017 2018 2019 2020 Billable/Specific Code
    Applicable To
    • Focal mucinosis
    • Lichen myxedematosus
    • Reticular erythematous mucinosis
    Type 1 Excludes

Diagnosis Index entries containing back-references to 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 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

    Unspecified osteoarthritis, unspecified site

      2016 2017 2018 2019 2020 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 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 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 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)
  • Cataract (cortical) (immature) (incipient) H26.9
    ICD-10-CM Diagnosis Code H26.9

    Unspecified cataract

      2016 2017 2018 2019 2020 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 Billable/Specific Code
      • in
        • myxedema E03.9
  • Dementia (degenerative (primary)) (old age) (persisting) F03.90
    ICD-10-CM Diagnosis Code F03.90

    Unspecified dementia without behavioral disturbance

      2016 2017 2018 2019 2020 Billable/Specific Code Adult Dx (15-124 years)
    Applicable To
    • Dementia NOS
  • Hoffmann's syndrome E03.9
  • Hypothyroidism (acquired) E03.9
  • Insufficiency, insufficient
  • Myopathy G72.9
    ICD-10-CM Diagnosis Code G72.9

    Myopathy, unspecified

      2016 2017 2018 2019 2020 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
E01.8 Other iodine-deficiency related thyroid disorders and allied conditions
E02 Subclinical iodine-deficiency hypothyroidism
E03 Other hypothyroidism
E03.0 Congenital hypothyroidism with diffuse goiter
E03.1 Congenital hypothyroidism without goiter
E03.2 Hypothyroidism due to medicaments and other exogenous substances
E03.3 Postinfectious hypothyroidism
E03.4 Atrophy of thyroid (acquired)
E03.5 Myxedema coma
E03.8 Other specified hypothyroidism
E03.9 Hypothyroidism, unspecified
E04 Other nontoxic goiter
E04.0 Nontoxic diffuse goiter
E04.1 Nontoxic single thyroid nodule
E04.2 Nontoxic multinodular goiter
E04.8 Other specified nontoxic goiter
E04.9 Nontoxic goiter, unspecified
E05 Thyrotoxicosis [hyperthyroidism]
E05.0 Thyrotoxicosis with diffuse goiter
E05.00 …… without thyrotoxic crisis or storm
E05.01 …… with thyrotoxic crisis or storm

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