2026 ICD-10-CM Diagnosis Code E55.0Rickets, active

ICD-10-CM Codes›E00–E89›E50-E64›E55

ICD-10-CM E55.0
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

E55.0 is a billable ICD-10-CM diagnosis code for rickets, active. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 553 through 554. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Nutritional deficiencies.

Code Identity

ICD-10-CM Code
E55.0
Billable Status
Yes — Valid for Submission
Code Describes
Rickets, active
Short Description
Rickets, active
Same as the full description in the CMS dataset.
Parent Code
E55
Vitamin D deficiency

Code Classification

ChapterE00–E89Endocrine, nutritional and metabolic diseases
SectionE50-E64Other nutritional deficiencies
CategoryE55Vitamin D deficiency
This CodeE55.0Rickets, active

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired deformity of chest wall
  • Active rickets
  • Biochemical rickets
  • Calcipenic type rickets
  • Curvature of spine due to osteomalacia
  • Endocrine myopathy
  • Hypocalcemic rickets
  • Hypophosphatasia rickets
  • Metabolic bone disease of prematurity
  • Myopathy in osteomalacia
  • Neonatal rickets
  • Osteomalacia
  • Osteomalacia due to vitamin D deficiency
  • Rachitic dwarf
  • Rachitic rosary
  • Rickets
  • Rickets due to prematurity

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Infantile osteomalacia
  • Juvenile osteomalacia

Type 1 Excludes

  • celiac rickets K90.0
  • Crohn's rickets K50
  • hereditary vitamin D-dependent rickets E83.32
  • inactive rickets E64.3
  • renal rickets N25.0
  • sequelae of rickets E64.3
  • vitamin D-resistant rickets E83.31

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Avitaminosis(multiple)
      • D
        • with rickets
    • Calciferol(vitamin D) deficiency
      • with rickets
    • Disease, diseased
      • English (rickets)
    • Morbus
      • angelicus, anglorum
    • Rickets(active) (acute) (adolescent) (chest wall) (congenital) (current) (infantile) (intestinal)
    • Rosary, rachitic
    • Scurvy, scorbutic
      • rickets
    • Tetany(due to)
      • associated with rickets

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR END007
Nutritional deficiencies
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • 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.

Patient EducationClinical

Malnutrition

Malnutrition means that your body isn't getting enough calories or the right balance of nutrients to stay healthy. This can happen if you don't get enough protein, carbohydrates, and fats, eat too much unhealthy food, or don't get the vitamins and minerals your body needs.

The full article covers:

  • What is malnutrition?
  • What are the types of malnutrition?
  • What causes malnutrition?
  • Who is at risk for developing malnutrition?
  • What are the symptoms of malnutrition?
  • How is malnutrition diagnosed?
  • What are the treatments for malnutrition?
  • Can malnutrition be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert E55.0 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
268.0 Rickets, active
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About E55.0Overview

Is E55.0 (Vitamin D deficiency) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report rickets, active on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does E55.0 group to?

When rickets, active is the principal diagnosis on an inpatient stay, it groups to MS-DRG 553, 554, with relative weights from 0.8301 to 1.2963 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of E55.0?

Under the General Equivalence Mappings, rickets, active converts to ICD-9-CM 268.0 (rickets, active). The mapping is a direct match.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.