Version 2024

2024 ICD-10-CM Diagnosis Code K55.21

Angiodysplasia of colon with hemorrhage

ICD-10-CM Code:: K55.21
ICD-10 Code for:: Angiodysplasia of colon with hemorrhage
Is Billable?: Yes - Valid for Submission
Chronic Condition Indicator: ^[1]: Chronic
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Code Information
Approximate Synonyms
Clinical Classification
Tabular List of Diseases and Injuries
Index to Diseases and Injuries References
Diagnostic Related Groups Mapping
Convert to ICD-9 Code
Patient Education
Other Codes Used Similar Conditions
Code History

Code Classification

Diseases of the digestive system
(K00–K95)
- Other diseases of intestines
  (K55-K64)
  - Vascular disorders of intestine
    (K55)

K55.21 is a billable diagnosis code used to specify a medical diagnosis of angiodysplasia of colon with hemorrhage. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Angiodysplasia of colon
Angiodysplasia of intestine
Dysplasia of colon
Dysplasia of large intestine
Hemorrhage of colon
Hemorrhage of colon due to angiodysplasia of colon
Intestinal hemorrhage due to angiodysplasia of intestine
Vascular disorder of large intestine

Clinical Classification

Clinical Category	CCSR Category Code	Inpatient Default CCSR	Outpatient Default CCSR
Gastrointestinal hemorrhage	DIG021	N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.	N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Other specified and unspecified gastrointestinal disorders	DIG025	Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.	Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.
Peripheral and visceral vascular disease	CIR026	N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.	N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

- Angiodysplasia (cecum) (colon) - K55.20
- - with bleeding - K55.21

K55.21 is grouped with Diagnostic Related Groups - MS-DRG Mapping

Diagnostic Related Groups (DRGs) are a classification system used to group together diagnosis codes for the purpose of reimbursement and healthcare management. DRGs are used to standardize the way hospitals and other providers are paid for inpatient services. In this system patients are grouped together based on their principal diagnosis in areas referred to as Major Diagnostic Categories (MDC). Once a patient is assigned a particular diagnostic category, providers receive a predetermined payment rate for the services rendered. This reimbursement rate is often fixed and is meant to cover the cost of care for that patient. Reimbursement is also affected by the relative weight of a diagnostic related group based on the severity of a patient's illness and the associated cost of care during hospitalization.

Diagnostic related groups encourage healthcare providers to focus on quality and efficiency in patient care while managing costs effectively. The diagnosis code is present in the following groups for version MS-DRG V41.0 applicable from 10/01/2023 through 09/30/2024.

MS-DRG	MS-DRG Title	MCD	Relative Weight
377	GASTROINTESTINAL HEMORRHAGE WITH MCC	06	1.7903
378	GASTROINTESTINAL HEMORRHAGE WITH CC	06	0.9838
379	GASTROINTESTINAL HEMORRHAGE WITHOUT CC/MCC	06	0.6332

The relative weight of a diagnostic related group determines the reimbursement rate based on the severity of a patient's illness and the associated cost of care during hospitalization.

Convert K55.21 to ICD-9-CM

ICD-9-CM Code: 569.85 - Angio intes w hmrhg

Patient Education

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:

Colorectal cancer
Colonic polyps - extra tissue growing in the colon that can become cancerous
Ulcerative colitis - ulcers of the colon and rectum
Diverticulitis - inflammation or infection of pouches in the colon
Irritable bowel syndrome - an uncomfortable condition causing abdominal cramping and other symptoms

Treatment for colonic diseases varies greatly depending on the disease and its severity. Treatment may involve diet, medicines and in some cases, surgery.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

[Learn More in MedlinePlus]

Gastrointestinal Bleeding

Your digestive or gastrointestinal (GI) tract includes the esophagus, stomach, small intestine, large intestine or colon, rectum, and anus. Bleeding can come from any of these areas. The amount of bleeding can be so small that only a lab test can find it.

Signs of bleeding in the digestive tract depend where it is and how much bleeding there is.

Signs of bleeding in the upper digestive tract include:

Bright red blood in vomit
Vomit that looks like coffee grounds
Black or tarry stool
Dark blood mixed with stool

Signs of bleeding in the lower digestive tract include:

Black or tarry stool
Dark blood mixed with stool
Stool mixed or coated with bright red blood

GI bleeding is not a disease, but a symptom of a disease. There are many possible causes of GI bleeding, including hemorrhoids, peptic ulcers, tears or inflammation in the esophagus, diverticulosis and diverticulitis, ulcerative colitis and Crohn's disease, colonic polyps, or cancer in the colon, stomach or esophagus.

The test used most often to look for the cause of GI bleeding is called endoscopy. It uses a flexible instrument inserted through the mouth or rectum to view the inside of the GI tract. A type of endoscopy called colonoscopy looks at the large intestine.