Acquired deformity of chest and rib

This code signifies a non-congenital structural abnormality of the thoracic cage, including the ribs, sternum, and associated cartilages. These deformities develop after birth due to various causes, impacting the normal contour and function of the chest wall.

Apply this code for conditions such as pectus excavatum or carinatum that are not present at birth, but rather develop later in life due to trauma, disease, or unknown etiology. Documentation should clearly state "acquired" or describe a cause that rules out a congenital origin.

• Differentiate carefully between acquired and congenital chest wall deformities; congenital forms are classified elsewhere.
• Always review documentation for the specific type of deformity (e.g., pectus excavatum, pectus carinatum) and its etiology.
• Consider additional codes for underlying causes (e.g., trauma, tumor) if applicable and clearly documented.