556.3
Ulcerative (chronic) proctosigmoiditis
The ICD-9 code for ulcerative (chronic) proctosigmoiditis is 556.3.
Legacy code — retired October 1, 2015ICD-10-CM equivalent
Informational only — GEM mappings are approximate, not guaranteed one-to-one equivalents.
View ICD-9 → ICD-10 crosswalk for 556.3 →