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Fibrosis, fibrotic
- retroperitoneal, idiopathic (with ureteral obstruction) N13.5
Ormond’s disease (with ureteral obstruction) N13.5
DO NOT follow the above index pathways to classify retroperitoneal fibrosis.
The default is a specific manifestation of the retroperitoneal fibrosis (that is, ureteric obstruction); there is no code option for retroperitoneal fibrosis without ureteric obstruction.
The WHO is considering creating a unique code for retroperitoneal fibrosis in a future edition of ICD-10. In the interim, assign the following code for retroperitoneal fibrosis (Ormond’s disease):
K66.8 Other specified disorders of peritoneum
by following the index pathway:
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