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 E20.9

2023 ICD-10-CM Diagnosis Code E20.9

Hypoparathyroidism, unspecified

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

• E20.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
• The 2023 edition of ICD-10-CM E20.9 became effective on October 1, 2022.
• This is the American ICD-10-CM version of E20.9 - other international versions of ICD-10 E20.9 may differ.

• Bilateral tetanic cataract
• Bilateral tetanic cataract (eye condition)
• Hypoparathyroidism
• Left tetanic cataract
• Left tetanic cataract (eye condition)
• Right tetanic cataract
• Right tetanic cataract (eye condition)
• Tetanic cataract

• 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.

• 643 Endocrine disorders with mcc
• 644 Endocrine disorders with cc
• 645 Endocrine disorders without cc/mcc
• 791 Prematurity with major problems
• 793 Full term neonate with major problems

Convert E20.9 to ICD-9-CM

• 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

• Type 1 Excludes: R29.0
  ICD-10-CM Diagnosis Code R29.0

  Tetany

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

  Applicable To

  • Carpopedal spasm

  Type 1 Excludes

  • hysterical tetany (F44.5)
  • neonatal tetany (P71.3)
  • parathyroid tetany (E20.9)
  • post-thyroidectomy tetany (E89.2)

• Cataract (cortical) (immature) (incipient) H26.9
  ICD-10-CM Diagnosis Code H26.9

  Unspecified cataract

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • in (due to)
    • hypoparathyroidism E20.9
• Deficiency, deficient
  • parathyroid E20.9 (gland)
• Hypoparathyroidism E20.9
• Insufficiency, insufficient
  • parathyroid E20.9 (gland)
• Myopathy G72.9
  ICD-10-CM Diagnosis Code G72.9

  Myopathy, unspecified

  2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • in (due to)
    • hypoparathyroidism E20.9
• Parathyroid tetany E20.9
• Tetany (due to) R29.0
  ICD-10-CM Diagnosis Code R29.0

  Tetany

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

  Applicable To

  • Carpopedal spasm

  Type 1 Excludes

  • hysterical tetany (F44.5)
  • neonatal tetany (P71.3)
  • parathyroid tetany (E20.9)
  • post-thyroidectomy tetany (E89.2)
  • parathyroid E20.9 (gland)

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