If you bill services to Colorado Medicaid patients, the Colorado Medicaid CPT code billing chart sits at the core of your revenue cycle. Every missed code, wrong modifier, or overlooked authorization can cost your practice thousands of dollars each year. Getting this right is not optional — it is essential.
This guide serves medical billers, practice managers, and healthcare providers working with Health First Colorado — Colorado’s Medicaid program run by the Department of Health Care Policy and Financing (HCPF). Whether your practice handles physician office visits, telehealth encounters, behavioral health services, or remote patient monitoring, this resource covers every key component of the Colorado Medicaid billing chart. You will learn how to read it, select correct CPT codes, manage prior authorizations, and submit clean claims the first time.
What Is the Colorado Medicaid CPT Code Billing Chart?
The Colorado Medicaid billing chart — officially the Health First Colorado Fee Schedule — lists every reimbursable CPT code alongside its payment rate for providers serving Medicaid members in Colorado. HCPF publishes and maintains this fee schedule, updating it twice per year. Providers can search it by code type, specialty, and service category at hcpf.colorado.gov/provider-rates-fee-schedule.
Think of the billing chart as a pricing dictionary for your practice. Each CPT or HCPCS code delivers three critical data points: whether Health First Colorado covers the service, what the reimbursement rate is, and what documentation or authorization requirements apply. Skipping this check before a claim submission leaves your practice billing blind.
Why Provider Type Matters on the Fee Schedule
HCPF organizes the Colorado Medicaid fee schedule by provider type. Physicians, behavioral health providers, physical therapists, pharmacists, and home health agencies each have a dedicated section. Colorado Medicaid does not reimburse all CPT codes uniformly across provider types. A code valid for a physician may not be payable when a different provider category submits it. Always confirm you are in the correct section of the fee schedule for your specialty before pulling a rate.
2025–2026 Rate Updates Every Provider Must Know
The 1.6% Across-the-Board Increase
On July 1, 2025, a 1.6% across-the-board rate increase took effect for most Fee-for-Service (FFS) benefits under Health First Colorado. The 2024 Colorado legislative session approved this increase. It covers physician services, dental care, behavioral health, and many other service categories. HCPF incorporated all updated rates into the Colorado interChange system. When you look up a CPT code today, the rate already reflects this increase.
Behavioral Health Rates: October 2025 Through June 2026
Behavioral health providers now work under specific updated rates. Sixty-minute individual psychotherapy (CPT 90837) pays $134.51. Forty-five-minute psychotherapy (CPT 90834) pays $91.09. Psychiatric diagnostic evaluation (CPT 90791) pays $159.67 per session. These rates cover dates of service through June 30, 2026.
New CPT Codes Added January 1, 2026
CMS releases new CPT and HCPCS codes every January. HCPF added the 2026 code set to its system on that date. Claims with these new codes may temporarily suspend with an EOB 0000 — meaning “pending program review” — while the interChange system updates. This suspension is normal. Your obligation is to verify prior authorization requirements for any new code before you render the service. A code appearing on the fee schedule does not automatically guarantee approval.
Remote Patient Monitoring: CPT Codes Now Covered
Colorado Senate Bill 24-168, passed in May 2024, mandated that Health First Colorado reimburse remote patient monitoring (RPM) services. That mandate took effect July 1, 2025. The following RPM CPT codes now appear on the Colorado Medicaid billing chart as covered benefits:
- CPT 99453 – Remote monitoring device setup and patient education
- CPT 99454 – Device supply with daily recording and transmission, per 30-day period
- CPT 99457 – RPM treatment management, first 20 minutes monthly
- CPT 99458 – RPM treatment management, each additional 20 minutes
- CPT 99091 – Collection and interpretation of physiologic data
RPM coverage applies when a provider determines medical necessity and the member has a qualifying condition — such as diabetes, hypertension, or a chronic illness that risks hospitalization without early detection. SB 24-168 also expanded coverage to continuous glucose monitors (CGMs) under both medical and pharmacy benefits. This expansion significantly broadens diabetes management billing for Colorado Medicaid providers.
Prior authorization may apply to some RPM services depending on the member’s managed care plan. Verify authorization status in the HCPF Provider Web Portal before rendering any RPM service.
How to Navigate the Colorado Medicaid Billing Chart: Step by Step
Step 1 — Verify Member Eligibility First
Run a member eligibility query in the HCPF Provider Web Portal before every encounter. The query confirms active Health First Colorado enrollment and identifies which Regional Accountable Entity (RAE) manages the member’s behavioral health benefits. Routing a claim to HCPF directly when it belongs to a RAE is one of the most common and costly billing errors in the state. Catching this before submission saves significant rework time.
Step 2 — Select the Correct Billing Manual
HCPF maintains separate billing manuals for each provider type. The Medical-Surgical Billing Manual governs most physician services. The State Behavioral Health Services (SBHS) Billing Manual, updated in October 2025, is the authoritative source for mental health and substance use disorder coding. The Telemedicine and eConsult Billing Manual covers all telehealth claims. Reading the right manual before coding prevents the most common submission errors.
Step 3 — Look Up the CPT Code Rate
Navigate to hcpf.colorado.gov/provider-rates-fee-schedule and open the interactive lookup tool. Enter the CPT or HCPCS code to pull the current rate. Rates vary by provider type and location modifier. A code billed from a facility setting reimburses at a different rate than the same code from a physician’s office in many cases. Always confirm the rate for your exact setting.
Step 4 — Apply Modifiers Correctly
Modifiers adjust the context of a code without changing the procedure itself. Missing or incorrect modifiers cause automatic denials. Key modifiers: modifier GT for synchronous telemedicine; modifier 95 for real-time audio-video telehealth; modifier 77 when a provider of a different specialty repeats an inpatient E/M code (99221–99223) on the same date (effective January 15, 2025); and location modifiers that separate facility from non-facility billing.
Step 5 — Confirm Prior Authorization Status
Not every covered CPT code processes without prior authorization. Specific DME items, certain surgical procedures, Community First Choice services, and some behavioral health services require a Prior Authorization Request (PAR). Submit the PAR before scheduling the service. Rendering a service without a required PAR means denial, regardless of medical necessity.
Step 6 — Submit Claims Electronically
Health First Colorado accepts claims via the CMS-1500 paper form or the 837P electronic transaction through the Provider Web Portal or a clearinghouse. Electronic submission processes faster, produces fewer errors, and HCPF strongly prefers it. For paper CMS-1500 forms, complete field 24D — the procedure code field — precisely and completely.
NCCI Edits: A Major Compliance Change Since July 2025
Colorado Medicaid adopted National Correct Coding Initiative (NCCI) edits across all claims on July 1, 2025. Medicare has applied these edits for years. Now Colorado Medicaid enforces the same compliance standards.
Two NCCI edit types affect your claims directly. Add-on Code (AOC) edits reject any add-on code submitted without its required parent code. If you bill a supplemental procedure without the primary code, the system denies the claim automatically. Medically Unlikely Edits (MUEs) cap the number of units billable for a service on one date. Units above the MUE limit face automatic rejection.
Update your charge capture workflow now. Confirm your billing software carries current 2025 NCCI edit pairs. Practices that relied on Colorado Medicaid’s historically more flexible coding rules will face higher denial rates without this update in place.
Colorado Medicaid Telehealth Billing Codes
Who Can Bill Telehealth
Telehealth billing now forms a major component of the Colorado Medicaid coding guide. Effective July 1, 2025, eligible distant site practitioners include MDs, DOs, Nurse Practitioners, and Physician Assistants. This expansion gives more providers access to telehealth reimbursement than at any prior point in Colorado Medicaid history.
eConsult Billing and Transmission Fees
For asynchronous eConsults, treating practitioners bill CPT 99452. The date of service is the date the eConsult concludes. HCPF adds a $5.00 distant site transmission fee on top of the base procedure rate for eligible physician telemedicine services. Originating sites collect a separate facility fee for hosting the encounter but cannot also bill for assisting the distant site provider during the visit.
Standard Telehealth E/M Codes
Standard E/M codes — such as 99213 or 99214 — apply to audio-video telehealth visits that mirror in-person encounters. Append the correct modifier: GT for synchronous telemedicine, or 95 for real-time audio-video services. Most Health First Colorado members pay $0 copayments for covered telehealth. That zero cost-sharing removes the most common access barrier for remote care.
Common Billing Errors That Trigger Claim Denials
Skipping the Eligibility Check
Failing to confirm eligibility before each encounter leads to incorrect payer routing. Members switch RAEs or lose coverage mid-month more often than billers expect. A two-minute eligibility query at the start of every encounter prevents the most expensive downstream errors.
Using Discontinued Consultation Codes
Colorado Medicaid no longer recognizes consultation codes in the ranges 99241–99245 and 99251–99255, consistent with Medicare policy. Submitting these codes triggers automatic denial. Use the E/M code that best reflects where the visit occurred and how complex the encounter was.
Missing Add-On Code Parent Codes
NCCI edits now flag any add-on code submitted without its required primary code. The system denies the claim automatically, and appeals will not succeed when the parent code is absent. Train your coding team to verify parent-code requirements before billing any supplemental procedure.
Underdocumenting Timed Codes
For physical therapy, occupational therapy, and behavioral health services, only direct member contact time counts toward timed code billing. Pre- and post-encounter documentation, drive time, and administrative tasks do not qualify. Insufficient documentation of direct contact time gives auditors grounds to recoup payments long after the original claim was paid.
Frequently Asked Questions (FAQs)
1. What is the Colorado Medicaid CPT code billing chart, and where can I access it?
The Colorado Medicaid CPT code billing chart is the official Health First Colorado Fee Schedule. It lists reimbursement rates for all covered CPT and HCPCS codes. HCPF maintains and updates it twice per year. Search the current schedule by code at hcpf.colorado.gov/provider-rates-fee-schedule. The schedule organizes results by provider type, so confirm you view the section matching your specialty before pulling any rate.
2. How often does the Colorado Medicaid fee schedule change?
HCPF updates the Health First Colorado fee schedule twice per year. The most recent rate change — a 1.6% across-the-board increase — took effect July 1, 2025. CMS adds new CPT and HCPCS codes each January 1. Current rates run through June 30, 2026, unless HCPF issues a mid-year amendment for a specific service category.
3. Does Colorado Medicaid require prior authorization for all CPT codes?
No. Routine services generally do not need prior authorization. Certain categories do require a PAR before the service date, including Community First Choice services, specific DME items, select surgical procedures, and some behavioral health codes. A missing required PAR means denial regardless of medical necessity. Check authorization requirements in your provider-type billing manual before scheduling any service that might need one.
4. What telehealth billing codes does Colorado Medicaid accept?
Standard E/M codes such as 99213 and 99214 apply to telehealth when paired with modifier GT or 95. Treating practitioners use CPT 99452 for eConsults. Specialists bill CPT 99446. As of July 1, 2025, RPM codes 99453, 99454, 99457, 99458, and 99091 are covered benefits. A $5.00 distant site transmission fee applies to eligible physician telemedicine services.
5. What should I do when Colorado Medicaid denies a claim?
Start by reading the EOB code to identify the exact denial reason. Common causes include missing modifiers, absent prior authorization, NCCI edit violations, and wrong payer routing. For authorization denials, submit a reconsideration request with supporting medical records. Coding denials, correct the code or modifier and resubmit. RAE routing errors, redirect the claim to the correct managed care entity. When you believe a denial is wrong, pursue HCPF’s formal appeals process through the Colorado interChange system.
Key Takeaways for Colorado Medicaid Providers
The Colorado Medicaid CPT code billing chart is your most important reference for accurate, compliant claims. Five practices separate high-performing billing teams from those who spend their days managing denials: checking the fee schedule before every service type, confirming eligibility before every encounter, applying modifiers correctly, respecting NCCI edits, and routing behavioral health claims to the right RAE.
This period is especially active for Colorado Medicaid billing. New RPM codes, expanded telehealth eligibility, the 1.6% rate increase, and January 2026 code additions all demand attention. Providers who monitor HCPF bulletins and billing manual updates will protect both their revenue cycle and their compliance standing.
For further guidance, visit the official HCPF billing manuals at hcpf.colorado.gov/billing-manuals. Claim-specific help, contact the Provider Services Call Center. Behavioral health billing questions, email hcpf_bhcoding@state.co.us.