OHCA Policies and Rules
The primary ICD-9-CM diagnosis code for Skilled Nursing Services is 319 (Mental Retardation). This code must be entered in Item 21 on the HCFA-1500. Any secondary diagnosis may also be entered in this field.
Disclaimer. The OHCA rules found on this Web site are unofficial. The official rules are published by the Oklahoma Secretary of State Office of Administrative Rules as Title 317 of the Oklahoma Administrative Code. To order an official copy of these rules, contact the Office of Administrative Rules at (405) 521-4911.