E20.811
Secondary hypoparathyroidism in diseases classified elsewhere
E20.811 (also written E20811) is a billable ICD-10-CM diagnosis code for secondary hypoparathyroidism in diseases classified elsewhere. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 9 codes in category E20 (Hypoparathyroidism). The Alphabetic Index lists it under 1 entry. Its coding notes include a Code first instruction and 7 Excludes1 entries.
Code first
If the underlying condition listed here is present and known, sequence it first.
- underlying condition, if known
Excludes1
Not coded here. The listed conditions generally should not be reported together.
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Hospice: not accepted as primary
Not accepted as the principal diagnosis on a hospice claim (bill types 081x and 082x). The Integrated OCE returns an edit for this code.
Reason: Manifestation code. Report the underlying condition first (see the Code first note).
Notes
Also from chapter/block level (1 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.
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 1 entry