K90.49 is the authoritative medical code for Malabsorption due to intolerance, not elsewhere classified. This classification is used in medical billing and clinical recording to specify the clinical criteria for malabsorption due to intolerance, not elsewhere classified (ICD-10-CM K90.49), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Malabsorption due to intolerance, not elsewhere classified is a billable ICD-10-CM diagnosis code K90.49. Inclusion terms: Malabsorption due to intolerance to carbohydrate; Malabsorption due to intolerance to fat; Malabsorption due to intolerance to protein; Malabsorption due to intolerance to starch. Excludes1 (not coded here): intestinal malabsorption following gastrointestinal surgery K91.2. Excludes2 (not included here): celiac gluten-sensitive enteropathy K90.0; lactose intolerance E73.-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for K90.49 in the official ICD-10-CM tabular list.
Inclusion Terms
Alternative terms the tabular list files under this code.
- Malabsorption due to intolerance to carbohydrate
- Malabsorption due to intolerance to fat
- Malabsorption due to intolerance to protein
- Malabsorption due to intolerance to starch
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- intestinal malabsorption following gastrointestinal surgery K91.2
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- celiac gluten-sensitive enteropathy K90.0
- lactose intolerance E73.-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with K90.49?
Per Excludes1 instructions, K90.49 must not be reported with: intestinal malabsorption following gastrointestinal surgery (K91.2).
Can K90.49 be reported alongside related conditions?
Per Excludes2 instructions, K90.49 and the following may both be reported when both are present: celiac gluten-sensitive enteropathy (K90.0); lactose intolerance (E73.-).
What conditions are included under K90.49?
Malabsorption due to intolerance, not elsewhere classified includes: Malabsorption due to intolerance to carbohydrate; Malabsorption due to intolerance to fat; Malabsorption due to intolerance to protein; Malabsorption due to intolerance to starch.
Codes in This Family (16)
Official ICD-10-CM classifications in the same code family as K90.49, with their registry titles.
- K90 — Intestinal malabsorption
- K90.0 — Celiac disease
- K90.1 — Tropical sprue
- K90.2 — Blind loop syndrome, not elsewhere classified
- K90.3 — Pancreatic steatorrhea
- K90.4 — Other malabsorption due to intolerance
- K90.41 — Non-celiac gluten sensitivity
- K90.8 — Other intestinal malabsorption
- K90.81 — Whipple's disease
- K90.82 — Short bowel syndrome
- K90.821 — Short bowel syndrome with colon in continuity
- K90.822 — Short bowel syndrome without colon in continuity
- K90.829 — Short bowel syndrome, unspecified
- K90.83 — Intestinal failure
- K90.89 — Other intestinal malabsorption
- K90.9 — Intestinal malabsorption, unspecified
Indexed Clinical Terms (21)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Absorption, carbohydrate, disturbance
- Absorption, fat, disturbance
- Absorption, protein, disturbance
- Absorption, starch, disturbance
- Decrease (d), tolerance, fat
- Disturbance (s), absorption, carbohydrate
- Disturbance (s), absorption, fat
- Disturbance (s), absorption, protein
- Disturbance (s), absorption, starch
- Enteropathy, protein-losing
- Intolerance, carbohydrate
- Intolerance, fat NEC
- Intolerance, food
- Intolerance, milk NEC
- Intolerance, protein
- Intolerance, starch NEC
- Malabsorption, carbohydrate
- Malabsorption, fat
- Malabsorption, protein
- Malabsorption, starch
- Sprue (tropical), idiopathic
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: