Parrella Health Law
By Christopher A. Parrella, Esq., CPC, CHC, CPCO
Boston, MA
A Health Care Provider Defense and Compliance Firm

Massachusetts Attorney General Andrea Joy Campbell has filed suit against UnitedHealthcare, alleging that the insurer improperly caused low-income older adults in the state’s Senior Care Options program to appear sicker than they were in order to increase payments from MassHealth. The complaint alleges that UnitedHealthcare received at least $100 million in excess Medicaid payments through inflated member classifications. If proven, the damages could be trebled under applicable law.

UnitedHealthcare denies the allegations and has called the lawsuit meritless.

For healthcare providers, the lawsuit is important for a reason that goes beyond UnitedHealthcare, Senior Care Options, or Massachusetts Medicaid. It highlights a growing tension in healthcare enforcement: payers aggressively audit providers for alleged overcoding, medical necessity failures, documentation deficiencies, and improper billing, while state and federal regulators are increasingly scrutinizing whether payers themselves use diagnosis and acuity coding to increase revenue.

The Allegations

Massachusetts’ Senior Care Options program serves low-income individuals over age 65 who are enrolled in Medicare and Medicaid. Participating plans are paid based on member acuity. According to the complaint, members are assigned to different payment levels. Level 1 members generate the lowest monthly payment. Level 2 members include individuals with behavioral health or substance use disorder conditions and generate higher payments. Level 3 members, including those needing daily skilled nursing, generate the highest payments.

The Attorney General alleges that UnitedHealthcare routinely classified members into higher payment levels even when they did not receive treatment for the conditions or did not qualify for the higher acuity level. The complaint also alleges that nurses conducting assessments were understaffed, overburdened, and incentivized in ways that encouraged higher classifications. The state further alleges that UnitedHealthcare focused assessments on members’ “worst days” rather than their current or most representative condition.

These allegations remain to be litigated. But the enforcement theory is clear: risk adjustment and acuity classification are not merely administrative tools. They are payment drivers, and when they are allegedly manipulated, they become enforcement targets.

Why Providers Should Pay Attention

Providers have lived with payer scrutiny for years. Behavioral health, SUD, ABA, outpatient mental health, and other healthcare providers are routinely challenged on documentation, coding, medical necessity, level of care, length of stay, supervision, treatment planning, and diagnosis support. Payers often allege that providers overstate patient acuity, bill unsupported levels of care, or fail to document clinical necessity.

This lawsuit shows that the same scrutiny can apply to payers. That matters strategically. When a payer accuses a provider of improper coding or inflated acuity, the provider should not automatically accept the payer’s framing. The provider should examine whether the payer’s own payment model, audit methodology, internal incentives, or historical practices created inconsistent standards.

If a payer profits from higher acuity classifications in one context but aggressively challenges provider acuity documentation in another, that inconsistency may matter in negotiation, appeal, litigation, and settlement posture.

Provider Call to Action

Healthcare providers should use this lawsuit as a reminder to strengthen their own documentation and payer dispute strategy. Behavioral health, SUD, ABA, outpatient mental health, and other providers should ensure that diagnosis selection, level-of-care decisions, medical necessity support, and treatment documentation are clinically grounded and internally consistent. Providers should also be prepared to challenge payer overpayment demands that apply one-sided coding standards, ignore clinical context, or rely on incomplete audit logic.

If you have any questions or would like to discuss how this issue may affect your organization, please email Chris directly at cparrella@parrellahealthlaw.com.

Bottom Line

The Massachusetts lawsuit against UnitedHealthcare is not just another payer enforcement story. It is a reminder that acuity coding drives money, and where money follows diagnoses, enforcement follows documentation. Providers should expect continued scrutiny, but they should also recognize the strategic significance of regulators scrutinizing payers for the same types of coding and acuity issues payers routinely assert against providers.