Z05 – Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out
ICD-10-CM 2027 diagnosis code · Persons encountering health services for examinations
ICD-10-CM code
Z05
- Code
Z05(claims format:Z05)- Description
- Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out
- Short description
- Enctr for Obs & eval of NB for susp diseases and cond R/O
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 21. Factors influencing health status and contact with health services (Z00-Z99)
- Block
- Z00-Z13 Persons encountering health services for examinations
Billable codes under Z05
Z05 is a header code and cannot be used on claims. Choose the most specific code:
- Z05.0 – Observation and evaluation of newborn for suspected cardiac condition ruled outBillable
- Z05.1 – Observation and evaluation of newborn for suspected infectious condition ruled outBillable
- Z05.2 – Observation and evaluation of newborn for suspected neurological condition ruled outBillable
- Z05.3 – Observation and evaluation of newborn for suspected respiratory condition ruled outBillable
- Z05.4 – Observation and evaluation of newborn for suspected genetic, metabolic or immunologic condition ruled outHeader (more codes below)
- Z05.5 – Observation and evaluation of newborn for suspected gastrointestinal condition ruled outBillable
- Z05.6 – Observation and evaluation of newborn for suspected genitourinary condition ruled outBillable
- Z05.7 – Observation and evaluation of newborn for suspected skin, subcutaneous, musculoskeletal and connective tissue condition ruled outHeader (more codes below)
- Z05.8 – Observation and evaluation of newborn for other specified suspected condition ruled outHeader (more codes below)
- Z05.9 – Observation and evaluation of newborn for unspecified suspected condition ruled outBillable
Notes for Z05
Applicable to:
- 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.
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
Block Z00-Z13
Notes:
- Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.
Frequently asked questions
What is ICD-10 code Z05?
Z05 is the ICD-10-CM code for encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out, in the block Z00-Z13 (Persons encountering health services for examinations).
Is Z05 a billable code?
No. Z05 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.