Vitamin D deficiency (E55) ICD-10-CM
The E55 code range covers vitamin d deficiency with 3 ICD-10-CM diagnosis codes. 2 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the E55 Range 3 codes · 2 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the E55 range.
Chronic Kidney Disease-Mineral and Bone Disorder
Decalcification of bone or abnormal bone development due to chronic KIDNEY DISEASES, in which 1,25-DIHYDROXYVITAMIN D3 synthesis by the kidneys is impaired, leading to reduced negative feedback on PARATHYROID HORMONE. The resulting SECONDARY HYPERPARATHYROIDISM eventually leads to bone disorders.
Familial Hypophosphatemic Rickets
A hereditary disorder characterized by HYPOPHOSPHATEMIA; RICKETS; OSTEOMALACIA; renal defects in phosphate reabsorption and vitamin D metabolism; and growth retardation. Autosomal and X-linked dominant and recessive variants have been reported.
Osteomalacia
Disorder caused by an interruption of the mineralization of organic bone matrix leading to bone softening, bone pain, and weakness. It is the adult form of rickets resulting from disruption of VITAMIN D; PHOSPHORUS; or CALCIUM homeostasis.
Rickets
Disorders caused by interruption of BONE MINERALIZATION manifesting as OSTEOMALACIA in adults and characteristic deformities in infancy and childhood due to disturbances in normal BONE FORMATION. The mineralization process may be interrupted by disruption of VITAMIN D; PHOSPHORUS; or CALCIUM homeostasis, resulting from dietary deficiencies, or acquired, or inherited metabolic, or hormonal disturbances.
Rickets, Hypophosphatemic
A disorder characterized by HYPOPHOSPHATEMIA; RICKETS; OSTEOMALACIA; resulting from lack of phosphate reabsorption by the kidneys and possible defects in vitamin D metabolism.
Vitamin D Deficiency
A nutritional condition produced by a deficiency of VITAMIN D in the diet, insufficient production of vitamin D in the skin, inadequate absorption of vitamin D from the diet, or abnormal conversion of vitamin D to its bioactive metabolites. It is manifested clinically as RICKETS in children and OSTEOMALACIA in adults. (From Cecil Textbook of Medicine, 19th ed, p1406)
About the E55 Code Range
The ICD-10 code section E55 is used to identify and classify different forms of vitamin D deficiency, including specific conditions like active rickets and unspecified vitamin D deficiency. These codes help accurately capture health issues related to inadequate vitamin D levels that affect bone health and metabolism.
E55.0 is designated for active rickets, a condition resulting from vitamin D deficiency that leads to bone deformities, such as curvature of the spine, hypophosphatasia rickets, and osteomalacia. Common synonyms like "rachitic dwarf," "rachitic rosary," and "hypocalcemic rickets" refer to this same bone disorder caused by insufficient vitamin D. Meanwhile, E55.9 covers the broader category of vitamin D deficiency where the cause or specifics are not clearly defined. This includes vitamin D deficiency linked to chronic kidney disease, secondary hyperparathyroidism, or inadequate vitamin D intake. Using the ICD-10 code for vitamin D deficiency ensures proper documentation for nutritional deficiencies impacting bone and endocrine health.
Questions About This Page
How many billable codes are in the E55 range?
Of the 3 codes in this range, 2 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the E55 range classify?
The range classifies vitamin d deficiency. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
