N18.4 — Chronic Kidney Disease Stage G4
Denied67M · referral — Nephrology referral
Insurer Rationale
Current renal impairment can be monitored in primary care with annual review and medication adjustment. Specialist referral is not medically necessary at this stage.
Clinical Contradiction
Insurer states
“Renal function is stable and can be managed by primary care”
Clinical evidence shows
eGFR 28 is CKD stage G4 — NICE mandates specialist nephrology referral for eGFR <30 to plan for renal replacement therapy
Patient risk
Delayed nephrology referral in G4 CKD reduces time for dialysis access preparation
Reasoning Chain
This patient sits right on the referral boundary but is over it: eGFR 28 means stage G4 CKD, not stage 3b. Progressive decline, anaemia, oedema, and heavy albuminuria justify specialist input before an avoidable crash into end-stage disease.
Reasoning Chain
Findings
eGFR 28 mL/min/1.73m2, Albuminuria A3, Anaemia, Peripheral oedema, Rising creatinine trend
Diagnosis
Chronic kidney disease (confirmed by repeat testing)
Assessment
CKD staging / progression review — Score: G4A3 — Specialist referral threshold met because stage G4 with heavy albuminuria and progression is present.
Guideline action
Nephrology referral with accelerated medication and renal-risk review
Verdict
Denial conflicts with CKD guidance because stage G4 disease with progression should not stay solely in routine primary care.
Clinical Evidence
NICE Guideline NG203 — Chronic kidney disease
Referral criteria
Stage G4 CKD and significant albuminuria justify nephrology referral rather than routine annual review.
KDIGO CKD Guideline (2024)
Specialist referral and progression risk
Rapid decline and G4 disease increase risk enough to warrant specialist management.