Short answer · Medically reviewed summary · Last updated: 2026-05-08
Acrodysostosis is classified under the ICD-10-CM code Q75.8 (Other specified malformations of skull) or sometimes represented via the broader category Q78.8; it does not have a unique, dedicated ICD-9-CM code, often falling under 756.59 (Other specified disorders of bone). Because Acrodysostosis is a very rare genetic condition, clinicians frequently utilize these broader codes for billing and administrative purposes. What is the clinical classification of Acrodysostosis? Acrodysostosis is a rare skeletal dysplasia characterized by severe brachydactyly, facial dysostosis, and nasal hypoplasia.
ICD10 code of Acrodysostosis and ICD9 code
ICD-10 and ICD-9 codes for Acrodysostosis, with classification details for clinicians, coders and patients.
Acrodysostosis is classified under the ICD-10-CM code Q75.8 (Other specified malformations of skull) or sometimes represented via the broader category Q78.8; it does not have a unique, dedicated ICD-9-CM code, often falling under 756.59 (Other specified disorders of bone). Because Acrodysostosis is a very rare genetic condition, clinicians frequently utilize these broader codes for billing and administrative purposes.
What is the clinical classification of Acrodysostosis?
Acrodysostosis is a rare skeletal dysplasia characterized by severe brachydactyly, facial dysostosis, and nasal hypoplasia. Within the medical community, Acrodysostosis is recognized in two primary forms: type 1, associated with PRKAR1A mutations, and type 2, associated with PDE4D mutations. Because these genetic markers were identified relatively recently, historical medical records often lack specific coding, making precise tracking through ICD systems challenging.
How is Acrodysostosis diagnosed?
Diagnosis of Acrodysostosis relies on a combination of clinical evaluation and genetic testing. Key features that lead physicians to suspect Acrodysostosis include:
- Progressive shortening of the bones in the hands and feet (brachydactyly).
- Distinctive facial features, including a pug nose and maxillary hypoplasia.
- Advanced bone age observed on radiographs during childhood.
- Hormone resistance, particularly to parathyroid hormone (PTH) and thyroid-stimulating hormone (TSH).
Is Acrodysostosis hereditary?
Acrodysostosis is typically inherited in an autosomal dominant pattern. Most cases of Acrodysostosis arise from de novo (new) mutations, meaning the affected individual is the first in their family to carry the genetic change. Genetic counseling is essential for families navigating a new diagnosis of Acrodysostosis to understand the recurrence risk and the specific molecular cause.
Connecting with the Acrodysostosis community
Living with a rare diagnosis can feel isolating. At DiseaseMaps.org, we have 11 members who have shared their personal journeys with Acrodysostosis. Connecting with others who understand the unique daily challenges of Acrodysostosis can provide both practical insights and emotional support.
Next steps
- Schedule a consultation with a clinical geneticist to confirm the diagnosis via molecular testing.
- Consult an endocrinologist to monitor for potential hormone resistance common in Acrodysostosis.
- Join the community at DiseaseMaps.org to share experiences with other families affected by Acrodysostosis.
Medical disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment from a qualified healthcare provider.
References
- NIH Genetic and Rare Diseases Information Center (GARD): Acrodysostosis
- Orphanet: Acrodysostosis (ORPHA:1301)
- OMIM (Online Mendelian Inheritance in Man): Acrodysostosis 1 (#101900) and 2 (#614613)
