ICD-10-CM 2027 diagnosis code
Z05Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out
Z05 is a header code, so it can't be reported by itself. Choose one of the 10 more specific codes beneath it.Short description: Enctr for Obs & eval of NB for susp diseases and cond R/O
Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About Z05
Z05 is the ICD-10-CM diagnosis code for encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out. It belongs to block Z00-Z13 (persons encountering health services for examinations) and chapter 21 (factors influencing health status and contact with health services). It is a header code, so it can't be reported by itself; one of its 10 subcodes must be used instead.
To report this condition, pick the subcode that matches the documentation: Z05.0 (out), Z05.1 (out), Z05.2 (out), Z05.3 (out), Z05.4 (out), Z05.5 (out), Z05.6 (out), Z05.7 (out) and 2 more.
It was added in FY2017, effective October 1, 2016.
Specific codes under Z05
- Z05.0Observation and evaluation of newborn for suspected cardiac condition ruled outBillable
- Z05.1Observation and evaluation of newborn for suspected infectious condition ruled outBillable
- Z05.2Observation and evaluation of newborn for suspected neurological condition ruled outBillable
- Z05.3Observation and evaluation of newborn for suspected respiratory condition ruled outBillable
- Z05.4Observation and evaluation of newborn for suspected genetic, metabolic or immunologic condition ruled out
- Z05.5Observation and evaluation of newborn for suspected gastrointestinal condition ruled outBillable
- Z05.6Observation and evaluation of newborn for suspected genitourinary condition ruled outBillable
- Z05.7Observation and evaluation of newborn for suspected skin, subcutaneous, musculoskeletal and connective tissue condition ruled out
- Z05.71Observation and evaluation of newborn for suspected skin and subcutaneous tissue condition ruled outBillable
- Z05.72Observation and evaluation of newborn for suspected musculoskeletal condition ruled outBillable
- Z05.73Observation and evaluation of newborn for suspected connective tissue condition ruled outBillable
- Z05.8Observation and evaluation of newborn for other specified suspected condition ruled out
- Z05.9Observation and evaluation of newborn for unspecified suspected condition ruled outBillable
Coding notes
- 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 that apply from higher levels
Instructions written at a parent level also apply to Z05.
Broader instructions also apply from Z00-Z13 Persons encountering health services for examinations and Chapter 21: Factors influencing health status and contact with health services.
Codes whose notes reference Z05
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2017 (effective 10/1/2016): Added
- No changes since FY2017.
Common questions about Z05
Is Z05 billable?
- No. Z05 is a header code. Report one of its more specific subcodes instead.