Z05Header code — not billable

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

Chapter
21. Factors influencing health status and contact with health services
Category
Z05
Effective date
October 1, 2026

Related codes in category Z05

Z05.0Obs & eval of NB for suspected cardiac condition ruled outYesZ05.1Obs & eval of NB for suspected infect condition ruled outYesZ05.2Obs & eval of NB for suspected neuro condition ruled outYesZ05.3Obs & eval of NB for suspected resp condition ruled outYesZ05.4Obs & eval of NB for suspected genetic, metab,immun cond R/OZ05.41Obs & eval of NB for suspected genetic condition ruled outYesZ05.42Obs & eval of NB for suspected metabolic condition ruled outYesZ05.43Obs & eval of NB for suspected immunologic cond ruled outYesZ05.5Obs & eval of NB for suspected GI condition ruled outYesZ05.6Obs & eval of NB for suspected GU condition ruled outYesZ05.7Obs & eval NB for susp skin, subcu, ms & conn tiss cond R/OZ05.71Obs & eval of NB for suspected skin, subcu cond ruled outYes

Frequently asked questions

What is ICD-10 code Z05?

Z05 is an ICD-10-CM diagnosis code for Encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out.

Is Z05 a billable code?

No. Z05 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is Z05 in?

Z05 falls under Chapter 21: Factors influencing health status and contact with health services.

When did Z05 become effective?

Z05 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to Z05?

Z05 belongs to category Z05, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.