B. Issuers may not require institutional care practitioners to use any coding system for the initial filing of claims for health care services other than the following:

(1) ICD - 9 - CM codes;

(2) revenue codes;

(3) HCPCS codes; and

(4) if charges include direct service furnished by a health care practitioner, the information outlined in Section 5 of this rule.

D. Institutional care providers that utilize HCFA form 1450 for submission of claims to issuers and that bill patients directly shall provide a properly completed HCFA form 1450 in addition to any other explanation information used to bill the patient when requested by the patient.

[7/1/94, 7/1/97; Recompiled 11/30/01]