PDGM Documentation Strategies for Home Health Agencies

Understanding PDGM’s Impact on Documentation

The Patient-Driven Groupings Model (PDGM) fundamentally changed how home health agencies are reimbursed. Under PDGM, payment is determined by clinical grouping, functional level, comorbidity adjustment, and admission source, all of which depend on accurate documentation.

This shift made documentation quality a direct driver of financial performance.

Clinical Grouping and Documentation

Clinical groupings under PDGM are determined by the primary diagnosis code. This means the principal diagnosis must be accurately identified and coded, supported by comprehensive clinical documentation.

Clinicians should clearly document the primary reason for home health services, the clinical findings that support the diagnosis, and the skilled interventions required to address the condition.

Functional Level Documentation

Functional assessment under PDGM is derived from OASIS items. Accurate functional documentation requires clinicians to assess and document the patient’s actual performance, not just their potential or capacity.

Document specific functional limitations, the level of assistance required, and how functional status affects the patient’s ability to manage their care at home.

Comorbidity Adjustment Documentation

PDGM provides comorbidity adjustments when patients have certain secondary diagnoses. To capture these adjustments appropriately, all relevant comorbidities must be documented and coded.

Ensure clinical documentation supports each secondary diagnosis with relevant clinical findings, treatment, and management plans.

Technology’s Role in PDGM Success

AI-powered documentation tools can help agencies maximize appropriate PDGM reimbursement by ensuring comprehensive capture of clinical information that drives classification. From OASIS accuracy to coding specificity, technology supports the documentation quality that PDGM demands.

PDGM Payment Rules in 2026 and 2027

CMS adjusts PDGM every year, and the last two rules raise the stakes on accurate grouping:

• CY2026 final rule (November 28, 2025): a net 1.3% cut to aggregate home health payments (about $220 million). It applied a permanent behavioral adjustment of -1.023% and a -3.0% temporary adjustment to recoup past overpayments.
• CY2027 proposed rule (July 1, 2026): a net 2.4% increase (about $420 million), built from a 2.1% payment update and a 0.3% outlier change. CMS proposed no new permanent adjustment but another -3.0% temporary adjustment, which collects about $500 million of a $4.9 billion recoupment balance. It also proposes to recalibrate the PDGM case-mix weights and update LUPA thresholds, functional impairment levels, and comorbidity subgroups for CY2027.
• Status: the CY2027 final rule had not been published as of October 6, 2026. CMS usually issues it in the fall.

With the temporary recoupment continuing, each 30-day period your documentation under-supports costs more than the headline update suggests. Agencies that invest in documentation quality (through training, process improvement, and technology) protect the reimbursement they have earned.

Sources: CMS CY2026 HH PPS final rule fact sheet, CY2027 HH PPS proposed rule, 91 FR 41216.

Technology That Supports PDGM Success

Better documentation drives better reimbursement under PDGM. Compare your options:

• AI Coding vs. Outsourced Coding Services, Which approach delivers better PDGM coding accuracy?
• Lime Health AI vs. Medalogix, AI documentation vs. predictive analytics for PDGM optimization
• AI Documentation vs. Manual Charting, How AI improves PDGM classification accuracy