W. Va. Code § 33-20B-3 – Rate filings.

(a) On or before July 1, 2004 and on July 1, each year thereafter, or at such other time specified by the commissioner, every insurer offering malpractice insurance in this state shall make a rate filing, in accordance with the provisions of section four, article twenty of this chapter, regardless of whether any increase or decrease is indicated, pursuant to subsection (a), section four, article twenty of this chapter. The information furnished in support of a filing shall include:
1. (i) The experience or judgment of the insurer or rating organization making the filing;
2. (ii) its interpretation of any statistical data the filing relies upon;
3. (iii) the experience of other insurers or rating organizations;
4. (iv) the character and extent of the coverage contemplated;
5. (v) the proposed effective date of any requested change and (vi) any other relevant factors required by the commissioner. When a filing is not accompanied by the information required by this section upon which the insurer supports the filing, the commissioner shall require the insurer to furnish the information and, in that event, the waiting period prescribed by subsection (b) of this section shall commence as of the date the information is furnished.
  A filing and any supporting information shall be open to public inspection as soon as the filing is received by the commissioner. Any interested party may file a brief with the commissioner supporting his or her position concerning the filing. Any person or organization may file with the commissioner a signed statement declaring and supporting his or her or its position concerning the filing. Upon receipt of any such statement prior to the effective date of the filing, the commissioner shall mail or deliver a copy of the statement to the filer, which may file a reply. This section is not applicable to any memorandum or statement of any kind by any employee of the commissioner.
(b) Every filing shall be on file for a waiting period of ninety days before it becomes effective. The commissioner may extend the waiting period for an additional period not to exceed thirty days if he or she gives written notice within the waiting period to the insurer or rating organization which made the filing that he or she needs the additional time for the consideration of the filing. Upon written application by the insurer or rating organization, the commissioner may authorize a filing which he or she has reviewed to become effective before the expiration of the waiting period or any extension of the waiting period. A filing shall be deemed to meet the requirements of this article unless disapproved by the commissioner within the waiting period or any extension thereof.
(c) No insurer shall make or issue a contract or policy of malpractice insurance except in accordance with the filings which are in effect for the insurer as provided in this article.