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

Excludes1

  • examinations related to pregnancy and reproduction (Z30-Z36, Z39.-)
  1. Z03 Encounter for medical observation for suspected diseases and conditions ruled out

    Inclusion term(s):

    • 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

    • 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
    1. Z03.6 Encounter for observation for suspected toxic effect from ingested substance ruled out

      Inclusion term(s):

      • Encounter for observation for suspected adverse effect from drug
      • Encounter for observation for suspected poisoning
    2. Z03.7 Encounter for suspected maternal and fetal conditions ruled out

      Inclusion term(s):

      • Encounter for suspected maternal and fetal conditions not found
      1. Z03.71 Encounter for suspected problem with amniotic cavity and membrane ruled out

        Inclusion term(s):

        • Encounter for suspected oligohydramnios ruled out
        • Encounter for suspected polyhydramnios ruled out
      2. Z03.72 Encounter for suspected placental problem ruled out

      3. Z03.73 Encounter for suspected fetal anomaly ruled out

      4. Z03.74 Encounter for suspected problem with fetal growth ruled out

      5. Z03.75 Encounter for suspected cervical shortening ruled out

      6. Z03.79 Encounter for other suspected maternal and fetal conditions ruled out

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

      1. Z03.81 Encounter for observation for suspected exposure to biological agents ruled out

        • Z03.810 Encounter for observation for suspected exposure to anthrax ruled out
        • Z03.818 Encounter for observation for suspected exposure to other biological agents ruled out
      2. Z03.82 Encounter for observation for suspected foreign body ruled out

        • Z03.821 Encounter for observation for suspected ingested foreign body ruled out
        • Z03.822 Encounter for observation for suspected aspirated (inhaled) foreign body ruled out
        • Z03.823 Encounter for observation for suspected inserted (injected) foreign body ruled out

          Inclusion term(s):

          • Encounter for observation for suspected inserted (injected) foreign body in eye ruled out
          • Encounter for observation for suspected inserted (injected) foreign body in orifice ruled out
          • Encounter for observation for suspected inserted (injected) foreign body in skin ruled out
      3. Z03.83 Encounter for observation for suspected conditions related to home physiologic monitoring device ruled out

        Inclusion term(s):

        • Encounter for observation for apnea alarm without findings
        • Encounter for observation for bradycardia alarm without findings
        • Encounter for observation for malfunction of home cardiorespiratory monitor
        • Encounter for observation for non-specific findings home physiologic monitoring device
        • Encounter for observation for pulse oximeter alarm without findings
      4. Z03.89 Encounter for observation for other suspected diseases and conditions ruled out

Abbreviations used here:

NEC Not elsewhere classifiable
This abbreviation in the Tabular List represents “other specified”. When a specific code is not available for a condition, the Tabular List includes an NEC entry under a code to identify the code as the “other specified” code.

NOS Not otherwise specified
This abbreviation is the equivalent of unspecified.