1. ICD-10-CM Codes
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2. E00-E89
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3. E20-E35
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4. E20-
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5. 2023 ICD-10-CM Diagnosis Code E20

2023 ICD-10-CM Diagnosis Code E20

Hypoparathyroidism

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

• E20 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
• The 2023 edition of ICD-10-CM E20 became effective on October 1, 2022.
• This is the American ICD-10-CM version of E20 - other international versions of ICD-10 E20 may differ.

• A condition caused by a deficiency of parathyroid hormone (or pth). It is characterized by hypocalcemia and hyperphosphatemia. Hypocalcemia leads to tetany. The acquired form is due to removal or injuries to the parathyroid glands. The congenital form is due to mutations of genes, such as tbx1; (see digeorge syndrome); casr encoding calcium-sensing receptor; or pth encoding parathyroid hormone.
• A disorder characterized by a decrease in production of parathyroid hormone by the parathyroid glands.
• An endocrine disorder characterized by decreased production of parathyroid hormone by the parathyroid glands. It is usually caused by damage of the parathyroid glands during head and neck surgery. Signs and symptoms include muscle cramps, abdominal pain, dry skin, brittle nails, cataracts, tetany, and convulsions.
• Condition produced by greatly reduced function of the parathyroids possibly due to autoimmune disease or genetic factors, or by the removal of those bodies; lack of parathyroid hormone leads to a fall in plasma calcium level, which may result in increase neuromuscular excitability and ultimately tetany followed by a rise in plasma phosphate level.

• 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 First: G73.7
  , H28
  ICD-10-CM Diagnosis Code G73.7

  Myopathy in diseases classified elsewhere

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

  Code First

  • underlying disease, such as:
  • hyperparathyroidism (E21.0, E21.3)
  • hypoparathyroidism (E20.-)
  • glycogen storage disease (E74.0)
  • lipid storage disorders (E75.-)

  Type 1 Excludes

  • myopathy in:
  • rheumatoid arthritis (M05.32)
  • sarcoidosis (D86.87)
  • scleroderma (M34.82)
  • Sjögren syndrome (M35.03)
  • systemic lupus erythematosus (M32.19)
  ICD-10-CM Diagnosis Code H28

  Cataract in diseases classified elsewhere

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

  Code First

  • underlying disease, such as:
  • hypoparathyroidism (E20.-)
  • myotonia (G71.1-)
  • myxedema (E03.-)
  • protein-calorie malnutrition (E40-E46)

  Type 1 Excludes

  • cataract in diabetes mellitus (E08.36, E09.36, E10.36, E11.36, E13.36)

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