Other hypertrophic osteoarthropathy, left ankle and foot

This code signifies a non-specific form of hypertrophic osteoarthropathy affecting the left ankle and foot. This condition involves abnormal bone and soft tissue proliferation, often characterized by clubbing of digits, periostosis, and arthropathy. It is typically a secondary manifestation of an underlying systemic disease.

Use this code when documentation specifies hypertrophic osteoarthropathy of the left ankle and foot, but the specific type (e.g., primary, secondary to lung disease) is not further defined or is classified as "other." This code is appropriate when the physician's diagnosis explicitly states "other hypertrophic osteoarthropathy" or similar non-specific terminology for the left lower extremity.

• Always seek to identify and code the underlying systemic condition causing the hypertrophic osteoarthropathy, as this code is typically a manifestation code.
• Ensure documentation clearly specifies "left ankle and foot" to avoid laterality errors.
• Differentiate from primary hypertrophic osteoarthropathy (Pachydermoperiostosis) which has its own specific code.