Index to Diseases and Injuries
Reflux
Index code:K21.9
- acid K21.9
- esophageal K21.9
- with esophagitis (without bleeding) K21.00
- with bleeding K21.01
- newborn P78.83
- gastroesophageal K21.9
- with esophagitis (without bleeding) K21.00
- with bleeding K21.01
- mitral — see Insufficiency, mitral
- ureteral — see Reflux, vesicoureteral
- vesicoureteral (with scarring) N13.70
- with
- nephropathy N13.729
- with hydroureter N13.739
- bilateral N13.732
- unilateral N13.731
- bilateral N13.722
- unilateral N13.721
- without hydroureter N13.729
- bilateral N13.722
- unilateral N13.721
- pyelonephritis (chronic) N11.0
- congenital Q62.7
- without nephropathy N13.71
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.
Frequently asked questions
What is the ICD-10-CM code for Reflux?
The ICD-10-CM Alphabetic Index directs "Reflux" to K21.9. Subterms below it may lead to a more specific code. Always confirm the code in the Tabular List before assigning it.
ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.