Overview

Principal Care Management (PCM) and Chronic Care Management (CCM) are monthly care management services that reimburse providers for coordinating and managing care for patients with qualifying chronic conditions outside of routine office visits.

Autism Spectrum Disorder (ASD) often involves complex, multidisciplinary care requiring coordination across medical, behavioral, educational, and community-based providers. While ASD may contribute to a patient’s overall healthcare needs, an autism diagnosis alone does not automatically support PCM or CCM billing.These services are intended for ongoing management of qualifying chronic conditions and must be for work that is separate and distinct from other reimbursable services.

Because these services are cumulative and billed monthly, utilization trends can be evaluated across providers, members, and time periods to identify billing patterns that differ from what is expected.

Why This Matters

Many individuals with ASD already receive extensive care coordination through services such as Applied Behavior Analysis (ABA), behavioral health treatment, targeted case management, home- and community-based services (HCBS), or other care coordination programs. These services frequently include activities such as caregiver communication, treatment planning, provider coordination, progress monitoring, and ongoing case management.

When PCM is billed in addition to these services, there is potential for overlapping reimbursement if providers are billing for similar care management activities during the same period. While concurrent services may be appropriate in some circumstances, recurring overlap across a provider’s patient population may show an opportunity for further review.

PCM/CCM Coding Overview

PCM and CCM services are reported using time-based CPT® codes. While coding requirements differ depending on the service and who performs the work, these codes generally represent ongoing care management furnished throughout a calendar month.

Chronic Care Management (CCM)

CPT Code	Description
99490	First 20 minutes of clinical staff time per calendar month
99439	Each additional 20 minutes of clinical staff time (reported with 99490)
99491	First 30 minutes personally provided by the physician or qualified healthcare professional
99487	Complex CCM requiring at least 60 minutes of clinical staff time
99489	Each additional 30 minutes of complex CCM (reported with 99487)

Principal Care Management (PCM) 

CPT Code	Description
99424	First 30 minutes personally provided by the physician or qualified healthcare professional
99425	Each additional 30 minutes personally provided
99426	First 30 minutes of clinical staff time directed by the billing practitioner
99427	Each additional 30 minutes of clinical staff time

Key Data Indicators

No single billing pattern proves fraud, waste, or abuse. However, the following indicators may help identify providers whose billing behavior differs from peers or what is expected.

High-Volume PCM/CCM Billing

Providers billing PCM or CCM for a large percentage of members with ASD may stand out when compared to peers. High enrollment rates can sometimes suggest that members are being routinely placed into care management programs rather than selected based on individualized clinical needs.

Autism as the Primary Diagnosis

Recurring PCM or CCM claims billed with ASD as the only or primary chronic condition may indicate an elevated-risk pattern, particularly when additional qualifying chronic conditions are rarely reported.

Frequent Use of Add-On Codes

Providers who frequently bill additional PCM or CCM time for a high percentage of their patients may differ significantly from their peers. Comparing add-on code utilization across providers with similar specialties and patient populations can help identify outliers.

Overlapping ABA and PCM Services

Applied Behavior Analysis (ABA) therapy often includes activities such as caregiver communication, coordination with other treating providers, treatment planning, progress monitoring, and ongoing case coordination. Many of these activities are similar to services that may also be reported under PCM.

Claims data showing frequent concurrent billing of ABA and PCM may indicate that multiple providers are being reimbursed for similar care management activities during the same period. While concurrent billing is not inherently inappropriate, consistently high rates of overlap may warrant further review to determine whether the services are distinct and separately reimbursable.

Billing Trends Over Time

Claims analytics can also identify broader utilization patterns, including:

• PCM services initiated shortly after ABA begins and continuing throughout the course of treatment.
• Multiple providers billing care management or coordination services for the same member during the same month.
• Sharp increases in PCM or CCM billing.
• Consistent monthly billing with little variation across large patient populations.
• High concentrations of recurring monthly PCM or CCM claims associated with ASD.

While any individual indicator may have a reasonable explanation, multiple indicators occurring together can strengthen the basis for additional investigation.

How Codoxo Fraud Scope Can Help

Fraud Scope uses AI-driven claims analytics to identify utilization patterns that are difficult to detect through individual claim review, helping SIU teams focus investigations on the providers most likely to warrant additional scrutiny.

• Compare PCM and CCM utilization across peers
• Identify providers with unusually large populations of members receiving recurring monthly care management services
• Detect concurrent billing of PCM with ABA, behavioral health services, targeted case management, HCBS case management, and other care coordination programs
• Measure add-on code utilization and identify providers whose billing differs from peer utilization metrics
• Track billing trends over time and identify rapid changes in utilization
• Prioritize providers for review using outlier detection, peer utilization, and over-time claims analysis

By combining provider utilization, peer benchmarking, longitudinal trend analysis, and AI-powered claims analytics, Fraud Scope helps SIU teams identify emerging billing patterns earlier—allowing investigators to prioritize resources where they can have the greatest impact.

References

• American Medical Association (AMA). CPT® 2026 Professional Edition. Chicago, IL: American Medical Association.
  (Official source for CPT® code descriptions, reporting guidelines, and coding instructions for Principal Care Management (PCM) and Chronic Care Management (CCM) services.)
• Centers for Medicare & Medicaid Services (CMS). Care Management Services.
  CMS Care Management Services
  (CMS guidance and resources related to Chronic Care Management, Principal Care Management, and other care management services.)
• Centers for Medicare & Medicaid Services (CMS). National Correct Coding Initiative (NCCI) Policy Manual for Medicare Services.
  CMS NCCI Policy Manual
  (Correct coding guidance related to code reporting, coding edits, and appropriate billing practices.)
• Centers for Medicare & Medicaid Services (CMS). Medicare Program Integrity Manual (Pub. 100-08).
  CMS Medicare Program Integrity Manual
  (Guidance related to Medicare program integrity activities, including medical review, audits, and identification of improper payment risks.)