E55.0 vs K90.0
E55.0 and K90.0 can never be reported together. ICD-10-CM declares them mutually exclusive with an Excludes1 note, meaning the two conditions cannot occur in the same patient — so exactly one of them is correct for any given encounter.
The official note, declared on E55.0
celiac rickets (K90.0)
E55.0
Rickets, active
Billable
- Chapter 4
- Endocrine, nutritional and metabolic diseases
- Section
- E50-E64
Use when the record says
- Infantile osteomalacia
- Juvenile osteomalacia
Indexed under
- Rickets (active) (acute) (adolescent) (chest wall) (congenital) (current) (infantile) (intestinal)
- Rosary, rachitic
- Calciferoldeficiency › with rickets (vitamin D)
- Disease, diseased › English
- Morbus › angelicus, anglorum
K90.0
Celiac disease
Billable
- Chapter 11
- Diseases of the digestive system
- Section
- K90-K95
Use when the record says
- Celiac disease with steatorrhea
- Celiac gluten-sensitive enteropathy
- Nontropical sprue
Indexed under
- Gee (-Herter)(-Thaysen) disease (nontropical sprue)
- Herter-Gee syndrome
- Heubner-Herter disease
- Thaysen-Gee disease (nontropical sprue)
- Thaysen's disease
These two codes sit in different chapters of the Tabular List, which is usually the clearest signal that they describe different underlying processes rather than different degrees of the same one.
Excludes1 is not always absolute: where two conditions covered by the note are genuinely unrelated, CMS guidance permits reporting both. Document the reasoning rather than assuming it. More on Excludes1 vs Excludes2 · FY2027