CKD-EPI formula
type: Class
subclass of: eGFR
comment: CKD defined as an eGFR of < 60 mL/min over at least 3 months

CNI renal toxicity
type: Class
subclass of: Declining renal graft function
comment: CNI = calcineurin inhibitor

Calciphylaxis
type: Class
subclass of: Secondary diagnoses
comment: Usually, but not always, associated with CKD

Creatinine clearance
type: Class
subclass of: Estimations of renal function
comment: e.g. using Cockcroft-Gault formula

Cystatin C
type: Class
subclass of: Blood tests
comment: Not diagnostic of CKD in isolation. Can be used to estimate GFR

Dialysis
type: Class
subclass of: Procedures
comment: Note that dialysis may be provided for AKI, in addition for CKD

Dialysis fistula or graft in situ
type: Class
subclass of: Clinical examination findings
comment: Functioning or non-functioning

HSP nephritis
type: Class
subclass of: Diffuse mesangial proliferative glomerulonephritis
comment: HSP = Henoch Schonlein purpura

Haemoproteinuria
type: Class
subclass of: Urinalysis
comment: Only if specified to be present for > 3 months

Isotopic eGFR
type: Class
subclass of: eGFR
comment: CKD defined as an eGFR of < 60 mL/min over at least 3 months

MDRD formula
type: Class
subclass of: eGFR
comment: CKD defined as an eGFR of < 60 mL/min over at least 3 months

Medication
type: Class
subclass of: Thing
comment: No medications specific to CKD

Monitoring of CKD
type: Class
subclass of: Process of care
comment: eg CKD annual check

Native renal biopsy
type: Class
subclass of: Renal biopsy
comment: NB. May be performed to investigate AKI

PET test
type: Class
subclass of: Dialysis adequacy test
comment: Peritoneal equilibrium test

Persistant proteinuria
type: Class
subclass of: Clinical examination findings
comment: Only if specified to be present for > 3 months

Phosphate binders
type: Class
subclass of: Medication
comment: Frequently prescribed in CKD, but not exclusively

Proteinuria
type: Class
subclass of: Urinalysis
comment: Only if specified to be present for > 3 months

RRT preparation
type: Class
subclass of: Process of care
comment: RRT = renal replacement therapy

Referral to nephrology
type: Class
subclass of: Specialist care
comment: May not identify CKD exclusively

Renal transplant graft in situ
type: Class
subclass of: Clinical examination findings
comment: Functioning or non-functioning

Renal transplantation
type: Class
subclass of: Procedures
comment: Not autotransplantation

Serum creatinine
type: Class
subclass of: Blood tests
comment: Not diagnostic of CKD in isolation. Used to calculate eGFR (MDRD or CKD-EPI equations) or creatinine clearance (Cockcroft-Gault equation)

URR
type: Class
subclass of: Dialysis adequacy test
comment: Urea reduction ratio

Urine albumin creatinine ratio
type: Class
subclass of: Proteinuria estimation
comment: CKD defined as a uACR of > 2.5 in woman and > 3.5 in men, over at least 3 months

Urine protein creatinine ratio
type: Class
subclass of: Proteinuria estimation
comment: CKD defined as a uPCR > 15, over at least 3 months

eGFR
type: Class
subclass of: Estimations of renal function
comment: = Estimated glomerular filtration rate. CKD defined as an eGFR of < 60 mL/min over at least 3 months

24h urinary protein excretion
type: Class
subclass of: Proteinuria estimation
comment: CKD defined as > 30mg in 24 hours, confirmed over at least 3 months

CKD in pregnancy
type: Class
subclass of: CKD in association with other conditions
comment: Must be specified as pre-existing CKD (not unspecified renal disorders in pregnancy)

Diabetic nephropathy
type: Class
subclass of: CKD in association with other conditions
comment: In both type I and type II diabetes mellitus

Discontinuation of medication due to CKD
type: Class
subclass of: Management
comment: Discontinuation of medication due to renal function not specific

Eosinophilic granulomatosis with polyangiitis with renal involvement
type: Class
subclass of: Renal vasculitis
comment: Churg-Strauss syndrome (with renal involvement)

Erythropoeitin therapy
type: Class
subclass of: Medication
comment: Frequently prescribed in CKD, but not exclusively

Granulomatosis with polyangiitis with renal involvement
type: Class
subclass of: Renal vasculitis
comment: Wegener's granulomatosis with renal involvement specified

Hypertensive nephropathy
type: Class
subclass of: CKD in association with other conditions
comment: Hypertensive renal disease, CKD secondary to hypertension

IgA nephropathy
type: Class
subclass of: Diffuse mesangial proliferative glomerulonephritis
comment: Berger's disease

Renal artery stenosis
type: Class
subclass of: Renovascular disease
comment: Atherosclerotic

Sodium bicarbonate
type: Class
subclass of: Medication
comment: Frequently prescribed in CKD, but not exclusively

Urate nephropathy
type: Class
subclass of: CKD in association with metabolic disorders
comment: 'Gouty nephropathy'

1α-Hydroxycholecalciferol
type: Class
subclass of: Medication
comment: Frequently prescribed in CKD, but not exclusively