Based on underlying defect in concentration of urine process in renal tubule, renal tubular acidosis can be classified into type 1 (distal), type 2 (proximal), type 4 (hypoaldosteronism) and  voltage-dependent RTA.
Renal tubular acidosis classification
Glucose-6-phosphate dehydrogenase deficiency classification
Acute tubular necrosis classification
Renal tubular acidosis epidemiology and demographics
Hepatorenal syndrome classification
Galactosemia classification
Renal tubular acidosis laboratory findings
Sickle-cell disease classification