Valid for Submission
E21.2 is a billable diagnosis code used to specify a medical diagnosis of other hyperparathyroidism. The code E21.2 is valid during the fiscal year 2022 from October 01, 2021 through September 30, 2022 for the submission of HIPAA-covered transactions.
The ICD-10-CM code E21.2 might also be used to specify conditions or terms like aberrant parathyroid gland, congenital anomaly of parathyroid glands, ectopic hyperparathyroidism, ectopic parathyroid hormone-related protein secretion or tertiary hyperparathyroidism.
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code E21.2:
Inclusion TermsInclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Tertiary hyperparathyroidism
Type 1 ExcludesType 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- familial hypocalciuric hypercalcemia E83.52
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code E21.2 are found in the index:
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Aberrant parathyroid gland
- Congenital anomaly of parathyroid glands
- Ectopic hyperparathyroidism
- Ectopic parathyroid hormone-related protein secretion
- Tertiary hyperparathyroidism
- HYPERPARATHYROIDISM-. a condition of abnormally elevated output of parathyroid hormone or pth triggering responses that increase blood calcium. it is characterized by hypercalcemia and bone resorption eventually leading to bone diseases. primary hyperparathyroidism is caused by parathyroid hyperplasia or parathyroid neoplasms. secondary hyperparathyroidism is increased pth secretion in response to hypocalcemia usually caused by chronic kidney diseases.
- HYPERPARATHYROIDISM SECONDARY-. abnormally elevated parathyroid hormone secretion as a response to hypocalcemia. it is caused by chronic kidney failure or other abnormalities in the controls of bone and mineral metabolism leading to various bone diseases such as renal osteodystrophy.
- HYPERPARATHYROIDISM PRIMARY-. a condition of abnormally elevated output of parathyroid hormone due to parathyroid hyperplasia or parathyroid neoplasms. it is characterized by the combination of hypercalcemia phosphaturia elevated renal 125 dihydroxyvitamin d3 synthesis and increased bone resorption.
Diagnostic Related Groups - MS-DRG Mapping
|MS-DRG||MS-DRG Title||MCD||Relative Weight|
|643||ENDOCRINE DISORDERS WITH MCC||10||1.6633|
|644||ENDOCRINE DISORDERS WITH CC||10||1.0183|
|645||ENDOCRINE DISORDERS WITHOUT CC/MCC||10||0.7678|
The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.
Convert E21.2 to ICD-9 Code
Information for Patients
Most people have four pea-sized glands, called parathyroid glands, on the thyroid gland in the neck. Though their names are similar, the thyroid and parathyroid glands are completely different. The parathyroid glands make parathyroid hormone (PTH), which helps your body keep the right balance of calcium and phosphorous.
If your parathyroid glands make too much or too little hormone, it disrupts this balance. If they secrete extra PTH, you have hyperparathyroidism, and your blood calcium rises. In many cases, a benign tumor on a parathyroid gland makes it overactive. Or, the extra hormones can come from enlarged parathyroid glands. Very rarely, the cause is cancer.
If you do not have enough PTH, you have hypoparathyroidism. Your blood will have too little calcium and too much phosphorous. Causes include injury to the glands, endocrine disorders, or genetic conditions. Treatment is aimed at restoring the balance of calcium and phosphorous.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases
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