Proximal renal tubular acidosis

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Proximal renal tubular acidosis

ORPHA:47159Disease

Also called Renal tubular acidosis type 2 · pRTA

What it is

A rare renal tubular disease characterized by impaired ability of the proximal tubule to reabsorb bicarbonate from the glomerular filtrate leading to hyperchloremic metabolic acidosis.

Key facts

Age of onset
All ages
Inheritance
Autosomal dominant, Autosomal recessive, Not applicable
Classified as
Disease

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Genes reported in subtypes

SLC4A4

Orphanet records this gene on 1 more specific entry under this disorder, not on this entry itself:

A well-studied disease is usually split into subtypes, and the gene is curated on whichever one the evidence belongs to. Open a subtype to see which gene goes with it.

ICD-10 codes

N25.8filed under a broader ICD-10 category — shared with 17 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Benefit programs to look at

Programs whose eligibility touches the same ICD-10 categories. Eligibility is decided by the administering agency, never by this page.

Cross-references

MEDDRA 10037080MONDO 0008369OMIM 179830OMIM 604278UMLS C0268435

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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