Sec. 7.2. (a) As used in this section, "provider" has the meaning set forth in IC 27-8-11-1.
(b) Not more than ninety (90) days after the effective date of a diagnostic or procedure code described in this subsection:
(1) the office shall for all purposes begin using the most current version of the:
(A) current procedural terminology (CPT);
(B) international classification of diseases (ICD);
(C) American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM);
(D) current dental terminology (CDT);
(E) Healthcare common procedure coding system (HCPCS); and
(F) third party administrator (TPA);
codes under which the office processes claims for services provided under the Medicaid program; and
(2) a provider shall begin using the most current version of the:
(A) current procedural terminology (CPT);
(B) international classification of diseases (ICD);
(C) American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders (DSM);
(D) current dental terminology (CDT);
(E) Healthcare common procedure coding system (HCPCS); and
(F) third party administrator (TPA);
codes under which the provider submits claims for payment for services provided under the Medicaid program.
(c) If a provider provides services that are covered under the Medicaid program:
(1) after the effective date of the most current version of a diagnostic or procedure code described in subsection (b); and
(2) before the office begins using the most current version of the diagnostic or procedure code;
the office shall reimburse the provider under the version of the diagnostic or procedure code that was in effect on the date that the services were provided.