Specialty billing / Hospital

Hospital Billing Services

Hospital revenue cycles fail at the seams. Status determination between inpatient and observation changes payment fundamentally, coding depends on documentation from physicians who do not see the financial consequence, and transfers, readmissions and payer status changes create disputes that surface long after the patient has gone home.

Glass medical cross representing the full revenue cycle

0

Years in revenue cycle

48h

Claim filing window

30d

Target days to payment

HIPAA

Compliant by design

Where it breaks

What makes hospital billing difficult

Inpatient versus observation status disputes

Payers reclassify short inpatient stays as observation after the fact, cutting reimbursement sharply. Without contemporaneous documentation of the expected length of stay and the risk supporting admission, the hospital has little to argue with on appeal.

Documentation that does not support the DRG

Terms like urosepsis or acute renal insufficiency do not map cleanly to the specificity coding requires. The clinical picture may be severe while the assigned group reflects a far less complex case, and severity of illness never reaches the claim.

Transfer and readmission rules

Discharge status codes drive transfer payment adjustments and readmission review. A patient sent to a skilled nursing facility but coded as discharged home changes the payment calculation and creates a reconciliation problem months later.

Fragmented denial ownership

Clinical denials, coding denials and eligibility denials land in different departments with no single owner. Accounts age while each group waits for another to act, and appeal deadlines pass without anyone deciding not to appeal.

Frequently billed

Codes we handle daily

99223 Initial hospital inpatient care, high complexity
99232 Subsequent hospital inpatient care, moderate complexity
99233 Subsequent hospital inpatient care, high complexity
99238 Hospital discharge day management, 30 minutes or less
99291 Critical care, first 30 to 74 minutes

Representative codes only. Actual coding follows current CPT/HCPCS guidance and payer policy.

Denials we prevent

Why hospital claims get denied

  • Inpatient admission downgraded to observation because the record does not support the expected length of stay.
  • Claim denied for lack of authorization when the patient's status changed after the original approval.
  • Discharge status code conflicts with the post-acute setting, triggering a transfer payment adjustment.
  • Diagnosis specificity insufficient to support the severity level assigned to the encounter.
What we do
  • Inpatient and observation status support
  • Clinical documentation improvement review
  • Discharge status and transfer code validation
  • Concurrent and retrospective authorization management
  • Coordinated clinical and technical denial appeals
  • Accounts receivable aging and escalation reporting

FAQ

Hospital billing questions

What documentation supports an inpatient admission?

The admitting physician's expectation that the patient requires hospital care spanning at least two midnights, with the clinical reasoning visible in the note: risk factors, failed outpatient management, findings on presentation, and the planned course. The expectation must be documented at admission, not reconstructed during an appeal weeks later.

Why do payers downgrade our short stays?

Because the record reads as a routine overnight observation rather than an admission decision. Reviewers look for the physician's stated expectation of duration and the specific risk that made outpatient management unsafe. When those two elements are present in the admission note, downgrades become far easier to overturn.

How does discharge status affect hospital payment?

Discharge status codes tell the payer where the patient went. Transfers to another acute facility or to certain post-acute settings can trigger a per diem payment adjustment instead of the full case rate. Coding a transfer as a routine home discharge misstates payment and typically surfaces as a recoupment later.

What is clinical documentation improvement actually doing?

Translating clinical reality into the specificity that coding requires. A patient with sepsis documented as urosepsis, or heart failure without acuity and type, is coded at a severity below the care delivered. Query workflows close that gap concurrently, while the physician still remembers the patient.

How does WNL RCM prioritize hospital denials?

By recoverable dollars against remaining appeal time, not by date order. High-value clinical denials with near deadlines are worked first, repeat denial patterns are traced back to their source, and accounts that genuinely cannot be recovered are closed rather than left aging in the report.

Next step

Billing built for hospital.

Send us your specialty, claim volume and current billing setup. We will come back with a proposal you can act on.