Revenue cycle analytics: denials, days in AR, and cash acceleration

Analyze revenue cycle performance for {provider_name} for {period}.

Inputs:
- Claims/denials data: {claims_denials}
- AR aging and DSO: {ar_dso}
- Cash collections and lag: {cash_lag}
- Payer-specific issues: {payer_issues}
- Operational notes: {operational_notes}

Output:
1) KPI dashboard summary (denial rate, clean claim rate, DSO, cash yield).
2) Root-cause themes and top denial reasons.
3) Action plan (process, coding, authorization, appeals) with owners.
4) Expected cash impact estimate ranges (high-level).

Keep it actionable and evidence-oriented.