Convert to ICD-10-CM: 
595.81 converts approximately to:
- 2015/16 ICD-10-CM N30.80 Other cystitis without hematuriaOr: 
- 2015/16 ICD-10-CM N30.81 Other cystitis with hematuria
 ICD-9-CM Volume 2 Index entries containing back-references to 
595.81:
- Cystitis (bacillary) (colli) (diffuse) (exudative) (hemorrhagic) (purulent) (recurrent) (septic) (suppurative) (ulcerative) 595.9  cystic(a) 595.81 cystic(a) 595.81
  encysted 595.81 encysted 595.81