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Referrals & Authorizations
When are referrals not required?
Reproductive healthcare services, including prenatal and postpartum care, do not require a referral from the member's PCP if the member receives those services from a CHP+ contracted provider.

A Primary Care Provider (PCP) does not need a referral for any services provided within the PCP practice group. One PCP practice can refer to another PCP practice in an urgent care situation, for a second opinion, or in an on-call situation.

Services not requiring prior authorization:
  • Emergency department visits
  • Reproductive Health Services (provided by a CHP+ participating provider)
  • Ambulance
  • Routine Vision Exams - 1 visit/year
  • Specialist visits (by a Participating Provider)


What services require a referral and/or authorization from Colorado Access by the PCP?
  • Inpatient admissions
  • Therapies (PT, OT or ST, except reproductive health services)
  • Ambulance services (except in life-threatening situations)
  • Behavioral Health Services

Please refer to our General Authorizations document available for download here.


Services requiring a referral or authorization:
  • Behavioral Health Visits
  • Facilities
  • Durable Medical Equipment (may require)
  • Hearing Aids
  • Developmental Evaluations
  • Chemotherapy
  • Surgery


Providers must receive an authorization from Colorado Access for each referral prior to services being rendered. Retroactive authorizations will not be assigned unless approved by CHP+ or unless the referral is for urgent care. An authorization will generally allow claims payment for a 90-day period from the date the authorization was issued, assuming continued membership. Extensions in special circumstances may be granted, but are done on a case-by-case basis. Please refer to the CHP+ State Managed Care Network Provider Manual for more details.

All CHP+ referral and authorizations can be requested either by telephone or by fax.

  Telephone Fax
Statewide 800-414-6198 877-232-5967
Metro Denver 303-751-9051 303-755-4135


The following information is needed when calling Colorado Access for referrals and authorizations:
  • Name of PCP practice
  • Diagnosis by ICD-9 code
  • Patient's name
  • Patient's Member ID number
  • Patient's date of birth
  • Specific services being authorized
  • Number of visits being authorized
  • Specialist being referred to



State Managed Care Network Customer Service
PO Box 17580 Denver, CO 80217-0580
Phone: (303) 751-9051
Toll Free: 1-800-414-6198
Send claims to:
CHP+ Claims
PO Box 17470
Denver, CO 80217-0470