Dialysis OPCS-4

Coding system
Coding system release
UK Renal Registry
Codelist ID
Version ID

  • 505bef04


OPCS-4 codes indicating dialysis treatment for kidney replacement therapy.


Included codes indicating current haemodialysis or peritoneal dialysis (PD). Preparatory codes (e.g. fistula preparation) were excluded except for PD catheter insertion as this takes place just before dialysis. Transplant failure codes excluded.


Codelists are developed by a broad community of users for individual study purposes, which may or may not meet the needs of other studies. They should not be thought of as universal definitions of a particular condition.

We don't offer any guarantees about what they do or don't identify. Users should carefully check that any codelist meets their needs, and seek clinical input where appropriate.

code term
X40 Dialysis NEC
X401 Renal dialysis
X402 Peritoneal dialysis NEC
X403 Haemodialysis NEC
X405 Automated peritoneal dialysis
X406 Continuous ambulatory peritoneal dialysis
X408 Other specified compensation for renal failure
X409 Unspecified compensation for renal failure
X41 Placement of ambulatory apparatus for compensation for renal failure
X41 Dialysis Catheter Ambulatory
X411 Insertion of ambulatory peritoneal dialysis catheter
X418 Other specified
X419 Unspecified
X42 Placement of other apparatus for compensation for renal failure
X42 Catheterisation Peritoneal Temporary Dialysis
X421 Insertion of temporary peritoneal dialysis catheter
X421 Dialysis Peritoneal Temporary Catheter Insertion
X428 Other specified
X429 Unspecified