Z03

Non-Billable

ChapterZ00–Z99

Rankcategory

Official Description

Encounter for medical observation for suspected diseases and conditions ruled out

Use a more specific code (1 billable, 2 non-billable)

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 21: Factors Influencing Health Status and Contact with Health Services (Z00-Z99).

Excludes2(Not included here. Code separately if applicable.)

Includes

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.

Excludes1(Not coded here. Use a different code.)

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

BillableHas subcodes

CH21Factors influencing health status and contact with health services (Z00-Z99)

Z00-Z13Persons encountering health services for examinations (Z00-Z13)

Z03Encounter for medical observation for suspected diseases and conditions ruled outNot billable

Z03.6Encounter for observation for suspected toxic effect from ingested substance ruled outBillable

Z03.7Encounter for suspected maternal and fetal conditions ruled outSubcodes

Z03.8Encounter for observation for other suspected diseases and conditions ruled outSubcodes

The following parent sections contain instructions or notes that apply to Z03:

Persons encountering health services for examinations (Z00-Z13)

2026

No direct MS-DRG triggers identified.

Find surgical and procedural codes related to Encounter for medical observation for suspected diseases and conditions ruled out.