ICD-10 E20.1
Billable / SpecificPseudohypoparathyroidism
About ICD-10-CM E20.1
ICD-10-CM code E20.1 represents Pseudohypoparathyroidism. This is a billable/specific code in the Endocrine, Nutritional, and Metabolic chapter (block E20). The 2026 edition of ICD-10-CM E20.1 became effective on October 1, 2025.
Medicare LCD Coverage for E20.1
Local Coverage Determinations (LCDs) from CMS MACs that list E20.1 as a covered diagnosis.
Showing top 9. Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing E20.1.
1 Cigna
4 Medicare
CPT Codes Commonly Billed with E20.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 83970 CMS LCD: Billing and Coding: Parathormone (Parathyroid Hormone) CMS LCD
Convert E20.1 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| E20.1 | 27549 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To E20.1
Other codes in section E20-E35 (Disorders of other endocrine glands).
ICD-10 E20.1, Billing FAQ
Is ICD-10 code E20.1 billable? +
Yes, E20.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What CPT codes are commonly billed with E20.1? +
Procedures frequently paired with E20.1 include: 83970.
What ICD-9 codes does E20.1 map to? +
Per CMS GEMs, E20.1 maps to ICD-9 codes: 27549. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on July 16, 2026.
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