45 CFR § 162.1401
Health care claim status transaction
April 14, 2021
The health care claim status transaction is the transmission of either of the following:
(a) An inquiry from a health care provider to a health plan to determine the status of a health care claim.
(b) A response from a health plan to a health care provider about the status of a health care claim.
[74 FR 3326, Jan. 16, 2009]