Diagnostic Code 7532 · 38 CFR §4.115b
DC 7532 covers renal tubular disorders — conditions affecting the tiny tubes within the kidneys responsible for filtering waste and balancing electrolytes. The CFR specifically lists renal glycosurias, aminoacidurias, renal tubular acidosis, Fanconi syndrome, Bartter syndrome, and related disorders of Henle's loop and proximal or distal nephron function. In veterans, these conditions may develop from toxic exposures during service, medication side effects, or as complications of other service-connected conditions. The VA provides a minimum 20% rating for a symptomatic condition, or the condition can be rated higher under the renal dysfunction criteria.
| Rating | Criteria |
|---|---|
| 0% | Diagnosed renal tubular disorder that is asymptomatic or well-controlled with minimal treatment. |
| 20% | The minimum rating for a symptomatic renal tubular disorder. This is a guaranteed floor when the condition is causing active symptoms requiring treatment, regardless of GFR level. |
| 30% | When rated as renal dysfunction: GFR between 45 and 59 sustained for at least three consecutive months during the past year. |
| 60% | When rated as renal dysfunction: GFR between 30 and 44 sustained for at least three consecutive months. |
| 80% | When rated as renal dysfunction: GFR between 15 and 29 sustained for at least three consecutive months. |
| 100% | When rated as renal dysfunction: GFR below 15 sustained for at least three consecutive months, or requiring regular dialysis, or eligible kidney transplant recipient. |
Nephrology diagnosis confirming the specific type of renal tubular disorder is essential. Serial lab results showing electrolyte levels, blood pH, and kidney function markers demonstrate the condition over time. Documentation of medications prescribed to manage the condition and records of any hospitalizations related to electrolyte crises or acidosis episodes show severity. A nexus letter linking the condition to military service or a service-connected disability establishes the connection.