(a) An insurer shall provide a preferred provider with copies of all applicable utilization review policies and claim processing policies or procedures.

(b) An insurer’s claims payment processes shall:

(1) use nationally recognized, generally accepted Current Procedural Terminology codes, notes, and guidelines, including all relevant modifiers; and

(2) be consistent with nationally recognized, generally accepted bundling edits and logic.

See https://statutes.capitol.texas.gov/Docs/IN/htm/IN.1301.htm