ICD-10 Z05
Non-Billable HeaderEncounter for observation and evaluation of newborn for suspected diseases and conditions ruled out
About ICD-10-CM Z05
ICD-10-CM code Z05 represents Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out. This is a non-billable header code in the Factors Influencing Health Status chapter (block Z05). The 2026 edition of ICD-10-CM Z05 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.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under Z05. Per CMS ICD-10-CM Tabular 2026.
- This category is to be used for newborns, within the neonatal period (the first 28 days of life), who are suspected of having an abnormal condition, but without signs or symptoms, and which, after examination and observation, is ruled out.
Medicare LCD Coverage for Z05
Local Coverage Determinations (LCDs) from CMS MACs that list Z05 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 Z05.
Our payer policy database covers Aetna, Cigna, Anthem, BCBS, Humana, and Medicare Advantage plans, but Z05 doesn't currently appear in any indexed policy. The code may still be covered under standard plan benefits.
CPT Codes Commonly Billed with Z05
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 Z05
Other codes in section Z00-Z13 (Persons encountering health services for examinations).
ICD-10 Z05, Billing FAQ
Is ICD-10 code Z05 billable? +
No, Z05 is a non-billable header code. Use a more specific child code from block Z05 when submitting claims.
What other names or terms map to Z05? +
ICD-10 Z05 includes: This category is to be used for newborns, within the neonatal period (the first 28 days of life), who are suspected of having an abnormal condition, but without signs or symptoms, and which, after examination and observation, is ruled out..
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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