K90.0
BillableCeliac disease
HCC Category Mapping
RxHCCHCC 66 — Pancreatic Disease and Disorders
0.000What This Code Means
An autoimmune condition where the small intestine cannot properly digest gluten (a protein in wheat, barley, and rye), causing malabsorption and digestive symptoms.
Coding Tips
- •Document whether the patient is on a gluten-free diet and compliance status
- •Link to associated conditions such as dermatitis herpetiformis (L13.0) or nutritional deficiencies when present
Clinical Significance
Celiac disease is an autoimmune condition where gluten triggers small intestine inflammation, leading to malabsorption and nutritional deficiencies. This lifelong condition requires strict gluten-free diet adherence and monitoring for complications including lymphoma and osteoporosis.
Documentation Requirements
- ✓Positive celiac serology (anti-tissue transglutaminase, anti-endomysial antibodies)
- ✓Small bowel biopsy showing villous atrophy
- ✓Clinical response to gluten-free diet
- ✓Symptoms of malabsorption (diarrhea, weight loss, bloating)
- ✓Evidence of nutritional deficiencies (iron, B12, folate, vitamin D)
- ✓Genetic testing (HLA-DQ2/DQ8) when performed
- ✓Exclusion of other causes of malabsorption
- ✓Documentation of gluten exposure history
Use Additional Code
Code Also
- exocrine pancreatic insufficiency (K86.81)
Commonly Confused Codes
K90.9 — Intestinal malabsorption unspecified when celiac disease not confirmedK58.9 — Irritable bowel syndrome for functional bowel symptomsK59.1 — Diarrhea when malabsorption not establishedZ87.19 — Personal history of digestive system diseases for treated conditionT78.1 — Other adverse food reactions for non-celiac gluten sensitivity