Urologic (lower tract)
Any location
Iatrogenic/postprocedure
GU trauma
Infection
Kidney stone
Erosion or mechanical obstruction by tumor
Ureter(s)
Dilatation of stricture
Bladder
Transitional cell carcinoma
Vascular lesions or malformations
Chemical or radiation cystitis
Prostate
Benign prostatic hypertrophy
Prostatitis
Urethra
Stricture
Diverticulosis
Foreign body
Endometriosis (cyclic hematuria with menstrual pain)
Renal (upper tract)
Glomerular
Glomerulonephritis
IgA nephropathy (Berger disease)
Lupus nephritis
Hereditary nephritis<unk> 
Toxemia of pregnancy
Serum sickness
Erythema multiforme
Nonglomerular
Interstitial nephritis
Pyelonephritis
Papillary necrosis: sickle cell disease, diabetes, NSAID use
Vascular: arteriovenous malformations, emboli, aortocaval fistula
Malignancy
Polycystic kidney disease
Medullary sponge disease
Tuberculosis
Renal trauma
Hematologic
Primary coagulopathy (e.g., hemophilia)
Pharmacologic anticoagulation
Sickle cell disease
Myoglobinuria - positive blood, no RBCs: rhabdomyolysis
Hemoglobinuria - positive blood, no RBCs
TTP / HUS
DIC
Mechanical valve emergency
Hemolytic anemia
Paroxysmal Nocturnal Hemoglobinuria
Miscellaneous
Eroding abdominal aortic aneurysm
Malignant hypertension
Loin pain–hematuria<unk> 
Renal vein thrombosis
Exercise-induced hematuria
Cantharidin (Spanish fly) poisoning
Stings/bites by insects/reptiles having venom with anticoagulant properties
Schistosomiasis
Sickle Cell Trait
Any location
Iatrogenic/postprocedure
GU trauma
Infection
Kidney stone
Erosion or mechanical obstruction by tumor
Ureter(s)
Dilatation of stricture
Bladder
Transitional cell carcinoma
Vascular lesions or malformations
Chemical or radiation cystitis
Prostate
Benign prostatic hypertrophy
Prostatitis
Urethra
Stricture
Diverticulosis
Foreign body
Endometriosis (cyclic hematuria with menstrual pain)
Iatrogenic/postprocedure
GU trauma
Infection
Kidney stone
Erosion or mechanical obstruction by tumor
Dilatation of stricture
Transitional cell carcinoma
Vascular lesions or malformations
Chemical or radiation cystitis
Benign prostatic hypertrophy
Prostatitis
Stricture
Diverticulosis
Foreign body
Endometriosis (cyclic hematuria with menstrual pain)
Glomerular
Glomerulonephritis
IgA nephropathy (Berger disease)
Lupus nephritis
Hereditary nephritis<unk> 
Toxemia of pregnancy
Serum sickness
Erythema multiforme
Nonglomerular
Interstitial nephritis
Pyelonephritis
Papillary necrosis: sickle cell disease, diabetes, NSAID use
Vascular: arteriovenous malformations, emboli, aortocaval fistula
Malignancy
Polycystic kidney disease
Medullary sponge disease
Tuberculosis
Renal trauma
Glomerulonephritis
IgA nephropathy (Berger disease)
Lupus nephritis
Hereditary nephritis<unk> 
Toxemia of pregnancy
Serum sickness
Erythema multiforme
Interstitial nephritis
Pyelonephritis
Papillary necrosis: sickle cell disease, diabetes, NSAID use
Vascular: arteriovenous malformations, emboli, aortocaval fistula
Malignancy
Polycystic kidney disease
Medullary sponge disease
Tuberculosis
Renal trauma
Primary coagulopathy (e.g., hemophilia)
Pharmacologic anticoagulation
Sickle cell disease
TTP / HUS
DIC
Mechanical valve emergency
Hemolytic anemia
Paroxysmal Nocturnal Hemoglobinuria
Eroding abdominal aortic aneurysm
Malignant hypertension
Loin pain–hematuria<unk> 
Renal vein thrombosis
Exercise-induced hematuria
Cantharidin (Spanish fly) poisoning
Stings/bites by insects/reptiles having venom with anticoagulant properties
Schistosomiasis
Sickle Cell Trait
Alport syndrome
Urologic 
IgA nephropathy
Any location
Polycystic kidney disease
Iatrogenic/postprocedure
Post-streptococcal glomerular nephritis
GU trauma