Clinical Trial Number

SAS Name
CLM_CLNCL_TRIL_NUM

The number used to identify all items and line item services provided to a beneficiary during their participation in a clinical trial.

Comments

CMS is requesting the clinical trial number be voluntarily reported. The number is assigned by the National Library of Medicine (NLM) Clinical Trials Data Bank when a new study is registered.

This field was effective September 1, 2008, for carrier and DME claims. Starting October 2023, this field is also available on institutional claims, i.e., inpatient, SNF, home health, hospice, and institutional outpatient claims. For institutional claims, the clinical trial number is also populated in the claim value amount field, when claim value code is equal to “D4.” CMS will continue to populate the clinical trial number in the claim value amount field, as well as this new field.

Source: NCH

ResDAC Comment: Prior to January 2014, this field was optional. Beginning in January 2014, the field is mandatory for claims for services provided in clinical trials, studies or registries, or under coverage with evidence development (CED). This field is populated with the National Clinical Trial number (NCT), if known, or the value 99999999 if the NCT is not known to the provider. Clinical trial numbers on claims are not validated.