Microscopic colitis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

A condition of inflammation of the colon that is only detectable when the colon's lining is examined under a microscope. The endoscopic appearance of the inner colon lining is normal. There are two types of microscopic colitis: lymphocytic colitis and collagenous colitis.

sections/codes in this section (DB33.1-DB33.1)

• Collagenous colitis  (DB33.10)
• Lymphocytic colitis  (DB33.11)
• Other specified microscopic colitis  (DB33.1Y)
• Microscopic colitis, unspecified  (DB33.1Z)

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