Z03 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Encounter for medical observation for suspected diseases and conditions ruled out.
Inclusion term
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.
Type 1 excludes
Codes
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
Code changed
Type 1 excludes
contact with and (suspected) exposures hazardous to health (Z77.-)encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.0-)person with feared complaint in whom no diagnosis is made (Z71.1)signs or symptoms under study- code to signs or symptoms
- 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
2018
Code changed
Type 1 excludes
contact with and (suspected) exposures hazardous to health (Z77.-)newborn observation for suspected condition, ruled out (P00-P04)person with feared complaint in whom no diagnosis is made (Z71.1)signs or symptoms under study- code to signs or symptoms
- contact with and (suspected) exposures hazardous to health (Z77.-)
- encounter for observation and evaluation of newborn for suspected diseases and conditions ruled out (Z05.0-)
- person with feared complaint in whom no diagnosis is made (Z71.1)
- signs or symptoms under study- code to signs or symptoms
2017
No changes
2016
New code