Chronic tubotympanic suppurative otitis media, left ear

This code signifies a persistent, purulent inflammation of the middle ear and eustachian tube affecting the left ear. It indicates a chronic infection characterized by ongoing discharge and often associated with a tympanic membrane perforation.

Apply this code when documentation specifies chronic suppurative otitis media (CSOM) involving the tubotympanic region of the left ear. This diagnosis is typically supported by findings of persistent otorrhea, a perforated tympanic membrane, and evidence of chronic inflammation on otoscopic examination.

• Ensure laterality is clearly documented as "left ear" to support this specific code.
• Distinguish from acute suppurative otitis media (H66.0-) and other forms of chronic otitis media (e.g., H66.2-, H66.3-).
• Look for documentation of "tubotympanic" involvement; otherwise, a more general chronic suppurative otitis media code might be appropriate.