Every year, agencies prepare for ICD-10 updates by reviewing new, revised, and deleted diagnosis codes. While those changes matter, what we’ve learned through years of coding, OASIS review, audits, and consulting is that the biggest challenge usually isn’t the new code. It’s the documentation. At MAC Legacy, our coding and OASIS teams review thousands of…
Every year, agencies prepare for ICD-10 updates by reviewing new, revised, and deleted diagnosis codes. While those changes matter, what we’ve learned through years of coding, OASIS review, audits, and consulting is that the biggest challenge usually isn’t the new code.
It’s the documentation.
At MAC Legacy, our coding and OASIS teams review thousands of records each month. One of the most common opportunities we identify is a disconnect between clinical documentation, OASIS responses, and coding specificity. When those pieces don’t align, agencies may experience increased physician queries, coding delays, reimbursement challenges, quality reporting concerns, and audit risk.
The FY 2027 ICD-10-CM updates, effective October 1, 2026, include 190 new codes, 30 deleted codes, and 4 revised code descriptions. Many of the changes continue a trend we’ve seen in recent years: greater specificity in clinical documentation requirements. New and expanded code categories include areas such as certain cardiac conditions, metastatic disease sites, musculoskeletal conditions, respiratory diagnoses, BMI reporting, and toxic exposures.
What does that mean for home health and hospice?
It means clinicians, coders, QA teams, and OASIS reviewers may need more detailed documentation to fully support the most accurate diagnosis code. A coder cannot assign specificity that isn’t documented in the medical record.
Some of the most common opportunities we see during coding and OASIS reviews include:
• Diagnoses lacking sufficient specificity
• Documentation that does not fully support the selected code
• OASIS responses that are not clearly reflected elsewhere in the clinical record
• Missing linkage between diagnoses and the reason for home health services
• Inconsistent documentation between disciplines
• Physician documentation that does not support the level of detail needed for accurate coding
One trend we’ve consistently observed is that organizations often spend significant time reviewing the annual code changes but less time evaluating whether documentation practices support those changes. In reality, documentation readiness frequently has a greater impact on outcomes than the code update itself.
A Quick October 1 Readiness Check
Ask yourself:
- Has your EMR been updated with the FY 2027 codes?
- Have coders reviewed deleted and revised codes that may affect current patients?
- Have clinicians been educated on any documentation specificity requirements?
- Do your coding, QA, and OASIS teams review opportunities together?
- Do physician query processes support timely clarification when documentation is unclear?
- Have you identified your most frequently used diagnoses that may be affected by the update?
The agencies that navigate annual ICD-10 updates most successfully aren’t necessarily the ones memorizing every new code. They’re the ones ensuring clinicians, coders, QA staff, and leadership are working from the same clinical story.
October 1 is more than a coding update. It’s an opportunity to evaluate the connection between documentation, coding accuracy, OASIS integrity, quality outcomes, reimbursement, and compliance.
Want to test drive our services, contact us today to discuss why clients have used us as their coding solution since 2004.
