Short answer · Medically reviewed summary · Last updated: 2026-04-07
The ICD-10-CM code for Morquio syndrome is E76.21, while the corresponding ICD-9-CM code is 277.5. As a specialist who has worked with patients living with Morquio syndrome (also known as Mucopolysaccharidosis type IV or MPS IV), I understand that navigating the administrative side of rare disease care can be overwhelming. These diagnostic codes are essential for ensuring that your medical records, insurance authorizations, and specialized treatments are processed accurately.
ICD10 code of Morquio Syndrome and ICD9 code
ICD-10 and ICD-9 codes for Morquio Syndrome, with classification details for clinicians, coders and patients.
The ICD-10-CM code for Morquio syndrome is E76.21, while the corresponding ICD-9-CM code is 277.5.
As a specialist who has worked with patients living with Morquio syndrome (also known as Mucopolysaccharidosis type IV or MPS IV), I understand that navigating the administrative side of rare disease care can be overwhelming. These diagnostic codes are essential for ensuring that your medical records, insurance authorizations, and specialized treatments are processed accurately. Because Morquio syndrome is a progressive lysosomal storage disorder, having these codes correctly documented is the first step in accessing multidisciplinary care, which often involves orthopedics, cardiology, and metabolic specialists.
Understanding the Clinical Context
Morquio syndrome is categorized into two subtypes, MPS IVA and MPS IVB, both of which fall under the same ICD-10 classification of E76.21 (Morquio-Brailsford syndrome). These codes are used globally to standardize medical billing and clinical data collection, which is vital for ongoing medical research. When your healthcare provider uses these specific codes, it helps the medical community track the prevalence and treatment outcomes of Morquio syndrome, eventually leading to better resource allocation for our patient community.
Practical Considerations for Families
If you find that your healthcare providers or insurance companies are struggling to recognize these codes, do not hesitate to provide them with the specific terminology. Because Morquio syndrome is a multisystem condition, you may find that different specialists use different billing codes depending on the specific symptom being treated (such as cervical spine instability or cardiac valvular issues). However, the primary metabolic diagnosis remains E76.21. Always ensure that your primary metabolic specialist has linked these codes to your specialist referrals to avoid unnecessary administrative delays.
Medical Disclaimer: This information is for educational purposes only and does not constitute medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
References
- NIH Genetic and Rare Diseases Information Center (GARD)
- Orphanet: Portal for rare diseases and orphan drugs
- OMIM (Online Mendelian Inheritance in Man)
- National MPS Society
