ICD-10 E23
Non-Billable HeaderHypofunction and other disorders of the pituitary gland
About ICD-10-CM E23
ICD-10-CM code E23 represents Hypofunction and other disorders of the pituitary gland. This is a non-billable header code in the Endocrine, Nutritional, and Metabolic chapter (block E23). The 2026 edition of ICD-10-CM E23 became effective on October 1, 2025. Non-billable codes cannot be used as a primary or secondary diagnosis on a claim, use a more specific child code instead.
Type 1 Excludes
Pure excludes, these codes can never be coded together with E23. The conditions are mutually exclusive (e.g., congenital vs acquired forms).
- postprocedural hypopituitarism (E89.3)
- short stature due to endocrine disorder (E34.3-)
Includes
- the listed conditions whether the disorder is in the pituitary or the hypothalamus
Medicare LCD Coverage for E23
Local Coverage Determinations (LCDs) from CMS MACs that list E23 as a covered diagnosis.
This doesn't mean the code isn't covered, it means no MAC has issued a Local Coverage Determination naming this specific code. Coverage may still apply under National Coverage Determinations or general medical-necessity rules.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing E23.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but E23 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with E23
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.
Codes Adjacent To E23
Other codes in section E20-E35 (Disorders of other endocrine glands).
ICD-10 E23, Billing FAQ
Is ICD-10 code E23 billable? +
No, E23 is a non-billable header code. Use a more specific child code from block E23 when submitting claims.
What codes are Type 1 Excludes for E23? +
Type 1 Excludes (never code together with E23): postprocedural hypopituitarism (E89.3); short stature due to endocrine disorder (E34.3-)
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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