Chronic myringitis, left ear

This code describes a persistent inflammation of the tympanic membrane (eardrum) in the left ear. Unlike acute myringitis, chronic myringitis indicates a long-standing or recurrent inflammatory process, often without significant middle ear effusion.

Apply this code when documentation specifies chronic inflammation of the left tympanic membrane. This diagnosis is typically made by otoscopy revealing a thickened, dull, or granular eardrum, often with vascular changes, in the absence of acute infection or perforation.

• Ensure the documentation explicitly states "chronic" to differentiate from acute myringitis.
• Laterality (left ear) must be clearly documented; do not default if not specified.
• Distinguish from otitis media with effusion (OME) or tympanosclerosis, which are distinct conditions.