Achondrogenesis

This code represents achondrogenesis, a rare and severe form of congenital chondrodysplasia characterized by extreme short-limbed dwarfism, underdeveloped bones, and often lethal outcomes due to respiratory insufficiency. It involves a fundamental defect in cartilage and bone development, leading to severely malformed skeletal structures.

Use this code for documented cases of achondrogenesis, typically identified prenatally via ultrasound or postnatally through clinical examination and radiographic findings. Documentation should clearly state the diagnosis of achondrogenesis, often specifying the type if known (e.g., type I or II), although this code does not differentiate types.

• Ensure documentation specifies "achondrogenesis" to differentiate from other forms of chondrodysplasia.
• Do not confuse with achondroplasia (Q77.4), which is a distinct and less severe condition.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter, especially in cases of fetal anomaly or neonatal care.