2024 ICD-10-CM Diagnosis Code K52.9

Approximate Synonyms

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

• Acute and chronic colitis
• Acute cecitis
• Acute gastroenteritis
• Acute gastroenteritis
• Arthritis of joint of spine due to inflammatory bowel disease
• Benign infantile seizure with mild gastroenteritis syndrome
• Choanal atresia
• Chronic colitis
• Chronic diarrhea
• Chronic diarrhea due to glucoamylase deficiency
• Chronic diarrhea of infants AND/OR young children
• Chronic diarrhea of infants AND/OR young children
• Chronic diarrhea of infants AND/OR young children
• Chronic diarrhea of infants AND/OR young children
• Chronic diarrhea of unknown origin
• Chronic diarrhea with villous atrophy syndrome
• Chronic idiopathic non-infectious enteritis of intestine
• Chronic non-specific colitis
• Colitis
• Congenital atresia of nares
• Congenital atresia of nasopharynx
• Congenital atresia of pharynx
• Congenital secretory diarrhea
• Distal colitis
• Diversion colitis
• Enteritis of intestine
• Enterocolitis
• Enteropathic arthritis
• Exacerbation of non-infective colitis
• Focal active colitis
• Gastroenteritis
• Hemolytic erythrophagocytic syndrome
• Hemophagocytic lymphohistiocytosis
• Hemorrhage of colon
• Hemorrhagic colitis
• Hemorrhagic enteritis of intestine
• Hemorrhagic gastroenteritis
• Idiopathic colitis
• IL21-related infantile inflammatory bowel disease
• Ileitis
• Immune dysregulation, inflammatory bowel disease, arthritis, recurrent infection syndrome
• Infantile gastroenteritis
• Infantile gastroenteritis
• Inflammation of large intestine
• Inflammatory bowel disease
• Inflammatory bowel disease, recurrent sinopulmonary infection syndrome
• Inflammatory disorder of digestive system
• Inflammatory disorder of digestive tract
• Inflammatory polyps co-occurrent and due to inflammatory bowel disease
• Intractable diarrhea with choanal atresia and eye anomaly syndrome
• Iritis co-occurrent with inflammatory bowel disease
• Jejunitis
• Juvenile arthritis of inflammatory bowel disease
• Macrophage activation syndrome
• Nonbacterial gastroenteritis of infant
• Noninfectious colitis
• Noninfectious enteritis due to autoimmune disease
• Noninfectious enteritis of intestine
• Noninfectious enteritis of intestine due to immunoglobulin A vasculitis
• Noninfectious gastroenteritis
• Noninfectious ileitis
• Noninfectious jejunitis
• Noninfectious sigmoiditis
• Non-infective colitis due to graft-versus-host disease
• Noninfective enteritis and colitis
• Noninfective enteritis of intestine due to graft-versus-host disease
• Non-specific colitis
• Obesity, colitis, hypothyroidism, cardiac hypertrophy, developmental delay syndrome
• Pericolitis
• Periodic fever, infantile enterocolitis, autoinflammatory syndrome
• Perisigmoiditis
• Phlegmonous enteritis of duodenum
• Phlegmonous enteritis of gastrointestinal tract
• Pyoderma gangrenosum due to inflammatory bowel disease
• Secretory diarrhea
• Seronegative arthritis secondary to inflammatory bowel disease
• Sigmoiditis
• Transient neonatal colitis
• Typhlitis
• Vasculitis due to inflammatory bowel disease
• Villous atrophy of intestine

Clinical Information

• Choanal Atresia

  a congenital abnormality that is characterized by a blocked choanae, the opening between the nose and the nasopharynx. blockage can be unilateral or bilateral; bony or membranous.

• Gastroenteritis

  inflammation of any segment of the gastrointestinal tract from esophagus to rectum. causes of gastroenteritis are many including genetic, infection, hypersensitivity, drug effects, and cancer.

• Gastroenteritis, Transmissible, of Swine

  a condition of chronic gastroenteritis in adult pigs and fatal gastroenteritis in piglets caused by a coronavirus.

• Murine hepatitis virus

  a species of the coronavirus genus causing hepatitis in mice. four strains have been identified as mhv 1, mhv 2, mhv 3, and mhv 4 (also known as mhv-jhm, which is neurotropic and causes disseminated encephalomyelitis with demyelination as well as focal liver necrosis).

• Transmissible gastroenteritis virus

  a species of coronavirus causing a fatal disease to pigs under 3 weeks old.

• Macrophage Activation Syndrome

  a serious complication of childhood systemic inflammatory disorders that is thought to be caused by excessive activation and proliferation of t-lymphocytes and macrophages. it is seen predominantly in children with systemic onset juvenile idiopathic arthritis.

• Enterocolitis

  inflammation of the mucosa of both the small intestine and the large intestine. etiology includes ischemia, infections, allergic, and immune responses.

• Enterocolitis, Necrotizing

  enterocolitis with extensive ulceration (ulcer) and necrosis. it is observed primarily in low birth weight infant.

• Enterocolitis, Neutropenic

  a syndrome characterized by inflammation in the ileum, the cecum, and the ascending colon. it is observed in cancer patients with chemotherapy-induced neutropenia or in other immunocompromised individuals (immunocompromised host).

• Enterocolitis, Pseudomembranous

  an acute inflammation of the intestinal mucosa that is characterized by the presence of pseudomembranes or plaques in the small intestine (pseudomembranous enteritis) and the large intestine (pseudomembranous colitis). it is commonly associated with antibiotic therapy and clostridium difficile colonization.

• Crohn Disease

  a chronic transmural inflammation that may involve any part of the digestive tract from mouth to anus, mostly found in the ileum, the cecum, and the colon. in crohn disease, the inflammation, extending through the intestinal wall from the mucosa to the serosa, is characteristically asymmetric and segmental. epithelioid granulomas may be seen in some patients.

• Ileitis

  inflammation of any segment of the ileum and the ileocecal valve.

• Pouchitis

  acute inflammation in the intestinal mucosa of the continent ileal reservoir (or pouch) in patients who have undergone ileostomy and restorative proctocolectomy (proctocolectomy, restorative).

• Typhlitis

  necrotizing inflammation of the cecum ("typhlon" in greek), sometimes spreading to the appendix and/or the ileum. symptoms include abdominal pain and diarrhea. its pathogenesis is multifactorial. typhlitis is often associated with neutropenia and chemotherapy in immunocompromised individuals (immunocompromised host).

• Colitis

  inflammation of the colon section of the large intestine (intestine, large), usually with symptoms such as diarrhea (often with blood and mucus), abdominal pain, and fever.

• Colitis, Collagenous

  a subtype of microscopic colitis, characterized by chronic watery diarrhea of unknown origin, a normal colonoscopy but abnormal histopathology on biopsy. microscopic examination of biopsy samples taken from the colon show larger-than-normal band of subepithelial collagen.

• Colitis, Ischemic

  inflammation of the colon due to colonic ischemia resulting from alterations in systemic circulation or local vasculature.

• Colitis, Lymphocytic

  a subtype of microscopic colitis, characterized by chronic watery diarrhea of unknown origin, a normal colonoscopy but abnormal histopathology on biopsy. microscopic examination of biopsy samples taken from the colon show infiltration of lymphocytes in the superficial epithelium and the underlying connective tissue (lamina propria).

• Colitis, Microscopic

  a condition characterized by chronic watery diarrhea of unknown origin, a normal colonoscopy but abnormal histopathology on biopsy. this syndrome was first described in 1980 by read and associates. subtypes include collagenous colitis and lymphocytic colitis. both have similar clinical symptoms and are distinguishable only by histology.

• Colitis, Ulcerative

  inflammation of the colon that is predominantly confined to the mucosa. its major symptoms include diarrhea, rectal bleeding, the passage of mucus, and abdominal pain.

• Colitis-Associated Neoplasms

  colonic neoplasms associated with chronic inflammation conditions such as ulcerative colitis and crohn disease.

• Cytomegalovirus Infections

  infection with cytomegalovirus, characterized by enlarged cells bearing intranuclear inclusions. infection may be in almost any organ, but the salivary glands are the most common site in children, as are the lungs in adults.

• Dysentery, Amebic

  dysentery caused by intestinal amebic infection, chiefly with entamoeba histolytica. this condition may be associated with amebic infection of the liver and other distant sites.

• Irritable Bowel Syndrome

  a disorder with chronic or recurrent colonic symptoms without a clearcut etiology. this condition is characterized by chronic or recurrent abdominal pain, bloating, mucus in feces, and an erratic disturbance of defecation.

• Coronavirus

  a member of coronaviridae which causes respiratory or gastrointestinal disease in a variety of vertebrates.

• Cytomegalovirus

  a genus of the family herpesviridae, subfamily betaherpesvirinae, infecting the salivary glands, liver, spleen, lungs, eyes, and other organs, in which they produce characteristically enlarged cells with intranuclear inclusions. infection with cytomegalovirus is also seen as an opportunistic infection in aids.

• AIDS-Related Enterocolitis

  enterocolitis associated with the aids virus.

• Enterocolitis

  an inflammatory process affecting the small intestine and colon. causes include viruses, bacteria, radiation, and antibiotics use.

• Enterocolitis Infectious, CTCAE|Enterocolitis Infectious|Enterocolitis infectious

  a disorder characterized by an infectious process involving the small and large intestines.

• Enterocolitis, CTCAE|Enterocolitis|Enterocolitis

  a disorder characterized by inflammation of the small and large intestines.

• Grade 1 Enterocolitis, CTCAE|Grade 1 Enterocolitis

  asymptomatic; clinical or diagnostic observations only; intervention not indicated

• Grade 2 Enterocolitis Infectious, CTCAE|Grade 2 Enterocolitis infectious

  passage of >3 unformed stools per 24 hrs or duration of illness >48 hrs; moderate abdominal pain; oral intervention indicated (e.g., antibiotic, antifungal, or antiviral)

• Grade 2 Enterocolitis, CTCAE|Grade 2 Enterocolitis

  abdominal pain; mucus or blood in stool

• Grade 3 Enterocolitis Infectious, CTCAE|Grade 3 Enterocolitis infectious

  iv antibiotic, antifungal, or antiviral intervention indicated; invasive intervention indicated; profuse watery diarrhea with signs of hypovolemia; bloody diarrhea; fever; severe abdominal pain; hospitalization indicated

• Grade 3 Enterocolitis, CTCAE|Grade 3 Enterocolitis

  severe or persistent abdominal pain; fever; ileus; peritoneal signs

• Grade 3 Necrotizing Enterocolitis, AE|Grade 3 Necrotizing Enterocolitis|Grade 3 Necrotizing Enterocolitis, Adverse Event

  an adverse event in a newborn characterized by confirmed necrotizing enterocolitis; major care change indicated (e.g. npo, antibiotics, non-urgent surgery).

• Grade 4 Enterocolitis Infectious, CTCAE|Grade 4 Enterocolitis infectious

  life-threatening consequences; urgent intervention indicated

• Grade 4 Enterocolitis, CTCAE|Grade 4 Enterocolitis

  life-threatening consequences; urgent intervention indicated

• Grade 4 Necrotizing Enterocolitis, AE|Grade 4 Necrotizing Enterocolitis|Grade 4 Necrotizing Enterocolitis, Adverse Event

  a necrotizing enterocolitis adverse event in a newborn characterized by bowel perforation (pneumoperitoneum)(modified bell stage iiib); shock, disseminated intravascular coagulation (dic), combined respiratory and metabolic acidosis (modified bell stage iiia); urgent major care change indicated.

• Grade 5 Enterocolitis Infectious, CTCAE|Grade 5 Enterocolitis infectious

  death

• Grade 5 Enterocolitis, CTCAE|Grade 5 Enterocolitis

  death

• Grade 5 Necrotizing Enterocolitis, AE|Grade 5 Necrotizing Enterocolitis|Grade 5 Necrotizing Enterocolitis, Adverse Event

  a necrotizing enterocolitis adverse event in a newborn which results in death.

• Infectious Enterocolitis|Enterocolitis infectious

  an infectious process affecting the small and large intestines. symptoms include diarrhea, cramping abdominal pain, and fever.

• Necrotizing Enterocolitis Totalis

  a severe and often fatal form of necrotizing enterocolitis, in which diffuse ischemia, necrosis, and pneumatosis intestinalis are evident in the small and large intestine. short bowel syndrome is common among survivors.

• Necrotizing Enterocolitis, AE|Necrotizing Enterocolitis|Necrotizing Enterocolitis, Adverse Event|Necrotizing enterocolitis neonatal

  an adverse event in newborns characterized by extensive mucosal ulceration, pseudomembrane formation, submucosal hemorrhage, and necrosis in the intestines .

• Necrotizing Enterocolitis|NEC|NEC|Necrotizing Enterocolitis in Fetus or Newborn|Necrotizing Enterocolitis in Fetus or Newborn

  a fulminating disease of neonates in which there is extensive mucosal ulceration, pseudomembrane formation, submucosal hemorrhage, and necrosis usually of the right colon, cecum, terminal ileum, and appendix, possibly due to perinatal intestinal ischemia and bacterial invasion. progression can lead to necrosis, perforation and/or scarring of the intestinal tract.

• Non-Infectious Gastroenterocolitis

  an inflammatory disease of the stomach and intestines due to a non-infectious cause.

• Suspected Necrotizing Enterocolitis

  the diagnosis assigned when a health care practitioner feels strongly the patient has necrotizing enterocolitis, but lacks definitive proof.

• Crohn Ileitis|Crohn's Ileitis

  crohn's disease affecting the ileum.

• Ileitis

  inflammation of the ileum.

• Rutgeerts Score RUTG0101 Original Result - Diffuse Aphthous Ileitis With Diffusely Inflamed Mucosa|RUTG0101-diffuse aphthous ileitis with diffusely inflamed mucosa|diffuse aphthous ileitis with diffusely inflamed mucosa

  rutgeerts score rutg0101 original result - diffuse aphthous ileitis with diffusely inflamed mucosa.

• Enteropathic Arthritis

  a form of chronic arthritis that is found in some patients with inflammatory bowel disease.

K52.9 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.

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 K52.9 to ICD-9-CM

• ICD-9-CM Code: 558.9 - Noninf gastroenterit NEC
  Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.

Patient Education

Digestive Diseases

When you eat, your body breaks food down to a form it can use to build and nourish cells and provide energy. This process is called digestion.

Your digestive system is a series of hollow organs joined in a long, twisting tube. It runs from your mouth to your anus and includes your esophagus, stomach, and small and large intestines. Your liver, gallbladder and pancreas are also involved. They produce juices to help digestion.

There are many types of digestive disorders. The symptoms vary widely depending on the problem. In general, you should see your doctor if you have:

• Blood in your stool
• Changes in bowel habits
• Severe abdominal pain
• Unintentional weight loss
• Heartburn not relieved by antacids

NIH: National Institute of Diabetes and Digestive and Kidney Diseases

Code History

• FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
• FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
• FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
• FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
• FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
• FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
• FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
• FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
• FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.