ICD-10 code for clinical research investigation admission

The ICD-10-CM code for clinical research investigation admission is Z00.6 (Encounter for examination for normal comparison and control in clinical research program).

Within Z00 (encounter for general examination without complaint, suspected or reported diagnosis), Z00.6 is specifically for encounter for examination for normal comparison and control in clinical research program. Related codes cover general adult medical examination (Z00.0), newborn, infant and child health examinations (Z00.1), examination for period of rapid growth in childhood (Z00.2), examination for adolescent development state (Z00.3), examination of potential donor of organ and tissue (Z00.5), examination for period of delayed growth in childhood (Z00.7) and other general examination (Z00.8).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.