Is ICD-10-CM code K63 billable?

No, K63 (Other diseases of intestine) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code K63 belong to?

K63 belongs to Chapter 11 of the ICD-10-CM tabular list: K00–K95 (Diseases of the Digestive System).

K63Not billable, use a more specific code below

Other diseases of intestine

In Other diseases of intestines (K55-K64), chapter 11: Diseases of the Digestive System

14 billable codes under K63: 2 are an MCC, 3 are a CC; 1 map to HCC 78 (Intestinal Obstruction/Perforation).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

There are no chapter-specific rules for Chapter 11 yet, so the general rules in Section I.B apply.

Read Section I.C.11 (page 58)

All codes under K63

K63 can't be used on a claim. Pick a billable code below; grey headings group them.

K63 MS-DRGs

As the principal diagnosis, the billable codes under K63 group to these 8 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 393 Other Digestive System Diagnoses with MCC (13 of 14 codes)
DRG 394 Other Digestive System Diagnoses with CC (13 of 14 codes)
DRG 395 Other Digestive System Diagnoses without CC/MCC (13 of 14 codes)
DRG 371 Major Gastrointestinal Disorders and Peritoneal Infections with MCC (1 of 14 codes)
DRG 372 Major Gastrointestinal Disorders and Peritoneal Infections with CC (1 of 14 codes)
DRG 373 Major Gastrointestinal Disorders and Peritoneal Infections without CC/MCC (1 of 14 codes)
DRG 791 Prematurity with Major Problems (1 of 14 codes)
DRG 793 Full Term Neonate with Major Problems (1 of 14 codes)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Colonic Diseases

Your colon, also known as the large intestine, is part of your digestive system. It's a long, hollow tube at the end of your digestive tract where your body makes and stores stool. Many disorders affect the colon's ability to work properly. Some of these include:

Small Intestine Disorders

Your small intestine is the longest part of your digestive system - about twenty feet long! It connects your stomach to your large intestine (or colon) and folds many times to fit inside your abdomen. Your small intestine does most of the digesting of the foods you eat. It has three areas called the duodenum, the ileum, and the jejunum.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.