(a) Not later than 10 days after use, an insurer writing personal automobile, residential property, or workers' compensation insurance must file with TDI a comprehensive set of underwriting guidelines used by the insurer or its agent.
(b) A filing made under subsection (a) of this section must contain:
  (1) a comprehensive set of underwriting guidelines;
  (2) a mark-up or redline version of the underwriting guidelines, clearly indicating any changes in the underwriting guidelines;
  (3) for each third-party data set used in underwriting, the following information:
    (A) the name of the data vendor or source;
    (B) a description of the data, such as a data dictionary, that includes the name for each data element and the corresponding definition;
    (C) a description of how the data is used in underwriting; and
    (D) a list of the underwriting guidelines that reflect use of the data; and
  (4) for each third-party model used in underwriting, the following information:
    (A) the name of the model vendor or source;
    (B) the model name and version number;
    (C) a description of the model;
    (D) a description of the model input;
    (E) a description of how the model output is used in underwriting; and
    (F) a list of the underwriting guidelines that depend on the output of the model.
(c) Filings must clearly indicate any changes in the underwriting guidelines resulting from the change in third-party data and modeling information. No filing is necessary for a change in third-party data and modeling information that does not result in a change to underwriting guidelines.
(d) For purposes of compliance with this section, an oral or electronic underwriting guideline must be converted to written form.
(e) An insurer group or group of affiliated insurers may file one set of underwriting guidelines on behalf of individual insurers in the group under the requirements of this section if the group clearly identifies which underwriting guidelines apply to each insurer within the group.
(f) An insurer that files underwriting guidelines under this section must submit the filing transmittal information required in §5.9310 of this title (relating to Property and Casualty Transmittal Information and General Filing Requirements) with each underwriting guideline filing.
(g) All filings for underwriting guidelines must relate to only one line of insurance.
(h) Underwriting guidelines contemplated by Insurance Code §38.003, concerning Underwriting Guidelines for Other Lines; Confidentiality, other than workers' compensation insurance, are required only if requested. Underwriting guidelines submitted in response to a request under Insurance Code §38.003 must be filed in compliance with subsections (d), (e), and (f) of this section.
(i) Filings under this division may not be combined with any other filings submitted under this subchapter.
(j) Information used to classify risks for the purpose of determining a rate must be filed under Division 6 of this title (relating to Filings Made Easy--Requirements for Rate and Rule Filings), even if the information is included in an underwriting guideline filing under this division.

Source Note: The provisions of this §5.9342 adopted to be effective February 10, 2005, 30 TexReg 548; amended to be effective November 16, 2014, 39 TexReg 8694; amended to be effective July 28, 2019, 44 TexReg 3640; amended to be effective January 8, 2024, 49 TexReg 41