Malabsorption due to intolerance, not elsewhere classified

This code signifies impaired nutrient absorption in the gastrointestinal tract resulting from a specific intolerance, not attributable to other specified causes. This malabsorption leads to inadequate uptake of essential nutrients, potentially causing nutritional deficiencies and related symptoms. It excludes malabsorption due to celiac disease, pancreatic disorders, or other clearly defined conditions.

Apply this code when documentation indicates malabsorption stemming from an identified intolerance (e.g., to certain food components or medications) that doesn't fit into more specific malabsorption categories. Supporting documentation should clearly state the intolerance and its link to the malabsorption, often evidenced by symptoms like chronic diarrhea, weight loss, or nutrient deficiencies.

• Ensure the documentation explicitly states "intolerance" as the cause of malabsorption and rules out other specific etiologies.
• Do not use this code for malabsorption due to celiac disease (K90.0) or other specified digestive diseases.
• Consider sequencing this code as a secondary diagnosis if the primary reason for the encounter is a specific symptom or complication arising from the malabsorption.