OAR 410-130-0160


ICD-10-CM Diagnosis Codes:


Always use the principal diagnosis code in the first position to the highest degree of specificity. List additional diagnosis codes if the claim includes charges for services that relate to the additional diagnoses. However, it is not necessary to include more than one diagnosis code per procedure code;


Diagnosis codes are required on all billings including those from independent laboratories and portable radiology including nuclear medicine and diagnostic ultrasound providers;


Always supply the ICD-10-CM diagnosis code to ancillary service providers when prescribing services, equipment, and supplies.


CPT and HCPCS Codes:


Use only codes from the current year for Current Procedural Terminology (CPT) and Healthcare Common Procedure Coding System (HCPCS) codes;


Effective January 1, 2005, HIPAA regulations prohibit the use of a grace period for codes deleted from CPT or HCPCS. In the past the grace period was from January 1 through March 31;


The division may consider reimbursement for CPT category III codes included under the following headings: Adaptive Behavior Assessments, Adaptive Behavior Treatment, and Exposure Adaptive Behavior Treatment With Protocol Modification. All CPT category II (codes with fifth character of “F”) and all other category III codes (codes with fifth character “T”) are not Division of Medical Assistance Programs’ (Division) covered services;


Use the most applicable CPT or HCPCS code. Do not fragment coding when services can be included in a single code (see the “Bundled Services” section of this rule). Do not use both CPT and HCPCS codes for the same procedure. This is considered duplicate billing.


The Medical-Surgical Service rules list the HCPCS/CPT codes that require authorization or have limitations. The Health Evidence Review Commission’s Prioritized List of Health Services (rule 410-141-0520) determines covered services.


For determining the appropriate level of service code for Evaluation and Management services, read the definitions in the CPT and HCPCS codebook. Use the definitions to verify level of service, especially for office visits. Unless otherwise specified in the Medical-Surgical provider rule, use the guidelines from CPT and HCPCS.


Bundled Services: Reimbursements for some services are “bundled” into the payment for another service. The Division does not make separate payment for bundled services and clients may not be billed for bundled services. The Division’s Not Covered/Bundled Services rule, OAR 410-130-0220 (Not Covered/Bundled Services/Not Valid), provides more information regarding bundled services.
[Publications: Publications referenced are available from the agency.]
Last Updated

Jun. 8, 2021

Rule 410-130-0160’s source at or​.us