ICD-10-CM
ICD-10 code for Infarct, infarction parathyroid gland: E21.4
The ICD-10-CM index points "Infarct, infarction parathyroid gland" to E21.4, Other specified disorders of parathyroid gland. E21.4 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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More specific codes in E21
A header groups codes and is not billed. A billable code is one you can report.
- E21Hyperparathyroidism and other disorders of parathyroid glandHeader
- E21.0Primary hyperparathyroidismBillable
- E21.1Secondary hyperparathyroidism, not elsewhere classifiedBillable
- E21.2Other hyperparathyroidismBillable
- E21.3Hyperparathyroidism, unspecifiedBillable
- E21.4Other specified disorders of parathyroid glandBillable
- E21.5Disorder of parathyroid gland, unspecifiedBillable
Excludes1
Excludes1 means these codes are not reported together.
From E21. A note on a category applies to every code under it.
Excludes2
Excludes2 means the other condition can be reported with this one when both are documented.
From E21. A note on a category applies to every code under it.
Related conditions
Related pages
- E21.4 code detailsNotes, nearby codes, CMS-HCC group
- Category E21Every code under it
- Chapter 4Endocrine, nutritional and metabolic diseases
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Infarct, infarction parathyroid gland?
The ICD-10-CM index points "Infarct, infarction parathyroid gland" to E21.4, Other specified disorders of parathyroid gland. E21.4 is a billable code.
Is E21.4 billable?
Yes. E21.4 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to E21.4?
The CDC tabular list gives 4 Excludes1 notes (not coded together), 1 Excludes2 note (may be coded together when both are documented) for E21.4 and the categories above it. They are listed on this page.
What chapter is E21.4 in?
Chapter 4. Endocrine, nutritional and metabolic diseases.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.