K59.3

K59.3: Megacolon, not elsewhere classified

Non-billable headerICD-10-CM

K59.3 is a non-billable header ICD-10-CM code for megacolon, not elsewhere classified. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

congenital megacolon (aganglionic) (Q43.1)
megacolon (due to) (in) Chagas' disease (B57.32)
megacolon (due to) (in) Clostridium difficile (A04.7-)
megacolon (due to) (in) Hirschsprung's disease (Q43.1)

Code first

The underlying condition must be sequenced before this code.

, if applicable (T51-T65) to identify toxic agent

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Dilatation of colon

Excludes1 inherited from the categories above K59.3

A category’s note binds every code beneath it.

Written on K59: Other functional intestinal disorders

change in bowel habit NOS (R19.4)
intestinal malabsorption (K90.-)
psychogenic intestinal disorders (F45.8)

Excludes2 inherited from the categories above K59.3

Not part of this code, but both may be coded when both are present.

Written on K59: Other functional intestinal disorders

functional disorders of stomach (K31.-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead K59.3

2 child codes. Green means billable.