Z05
⚠ Non-billable
Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out
ICD-10-CM · FY2026 · Factors Influencing Health Status
Code
Z05
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Also known as
- 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.
Frequently asked questions
What is ICD-10 code Z05?
ICD-10-CM code Z05 represents Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out. It is a non-billable header code requiring a more specific subcategory in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z05 billable?
No. Z05 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is Z05 in?
Z05 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
Related codes in the Z05 category
Z05.0
Observation and evaluation of newborn for suspected cardiac condition ruled out
Billable
Z05.1
Observation and evaluation of newborn for suspected infectious condition ruled out
Billable
Z05.2
Observation and evaluation of newborn for suspected neurological condition ruled out
Billable
Z05.3
Observation and evaluation of newborn for suspected respiratory condition ruled out
Billable
Z05.4
Observation and evaluation of newborn for suspected genetic, metabolic or immunologic condition ruled out
Non-billable
Z05.5
Observation and evaluation of newborn for suspected gastrointestinal condition ruled out
Billable
Z05.6
Observation and evaluation of newborn for suspected genitourinary condition ruled out
Billable
Z05.7
Observation and evaluation of newborn for suspected skin, subcutaneous, musculoskeletal and connective tissue condition ruled out
Non-billable
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