ICD-10-CM › Z00-Z99 › Z00-Z13 › Z codes › Z03

Z03

Encounter for medical observation for suspected diseases and conditions ruled out

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

  • Z03.6 Encounter for observation for suspected toxic effect from ingested substance ruled out
  • Z03.7 Encounter for suspected maternal and fetal conditions ruled out (also a header)
  • Z03.8 Encounter for observation for other suspected diseases and conditions ruled out (also a header)

What has happened to this code

Every change the publisher made, from 2012 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2012 Added to the draft code set draft Encounter for medical observation for suspected diseases and conditions ruled out

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

This code

Excludes1 - never coded here

  • contact with and (suspected) exposures hazardous to health (Z77.-)
  • encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.-)
  • person with feared complaint in whom no diagnosis is made (Z71.1)
  • signs or symptoms under study- code to signs or symptoms

Also known as

  • This category is to be used when a person without a diagnosis is suspected of having an abnormal condition, without signs or symptoms, which requires study, but after examination and observation, is ruled out. This category is also for use for administrative and legal observation status.

Inherited from the Z00-Z13 section Persons encountering health services for examinations (Z00-Z13)

Excludes2 - not included here

  • examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)

Note

  • Nonspecific abnormal findings disclosed at the time of these examinations are classified to categories R70-R94.