Sift Healthcare
Aetna's new level of severity changes and the impact on hospital denial rates.

Aetna’s SOI policy is changing inpatient reimbursement without showing up as a denial.

Last week, we wrote about PLBs and how revenue is being pulled back after payment in ways most teams aren’t actively monitoring. We’re also seeing a similar dynamic show up earlier in the process.

Aetna’s SOI-based inpatient policy approves stays as inpatient but reimburses them at a lower rate based on severity. There’s no rebill and no formal denial. The claim moves through, but the payment doesn’t match what most teams would expect.

What makes this harder is how it shows up. Some of it is visible in remittance data, some of it isn’t, and it doesn’t route through the usual denial workflows. Unless you’re specifically looking for it, it blends into normal payment activity.

This is the same pattern we called out with PLBs, just at a different point in the lifecycle. Payment adjustments are made without clear signals, leaving teams to piece it together after the fact. The operational response today is to appeal and recover. That still matters, but it doesn’t address how these decisions are made in the first place or how often they occur.

As more of this type of behavior shows up, the challenge isn’t just working denials faster. It’s understanding how reimbursement is actually being determined across payers and where it’s starting to diverge from what teams expect.

This is the kind of pattern Sift tracks in our Denials Insights work, where payer reimbursement is shifting without a clear signal.

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Bethany Grabher

Bethany Grabher leads HR and Communications at Sift Healthcare, where she turns complexity into clarity and ideas into action. A lifelong ideator, she explores how culture, strategy, and technology shape the way healthcare organizations grow and lead.

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