M25.571 - Pain in right ankle and joints of right foot

Clinical Definition

Absence (congenital) of pinna represents the complete or partial failure of development of the external ear (auricle/pinna) present at birth. This can range from minor structural abnormalities to complete absence of the external ear structure.

Documentation Requirements

• Specify laterality (right, left, or bilateral)

• Document if complete or partial absence

• Note if condition is congenital (present at birth)

• Include any associated congenital anomalies if present

• Document if part of a known syndrome

• Note presence/absence of ear canal development

• Document functional impact on hearing

Common Synonyms

• Missing outer ear

• No ear/Missing ear (patient terminology)

• Anotia (complete absence)

• Microtia (partial development)

• External ear deformity

• Ear shell absence

Coding Conflicts

Excludes1:

• Acquired absence of ear (parts) - use Z90.0

• Post-surgical absence of ear structures

Excludes2:

• Congenital malformation of ear causing hearing impairment

• Other congenital deformities of ear

Scribing.io Automation

Scribing.io's AI scribe automatically detects and tags key phrases like:

• "Congenital absence of pinna"

• "Born without external ear"

• Laterality descriptors ("right," "left," "bilateral")

• Associated terms like "anotia" and "microtia"

• Documentation of related congenital conditions

• Presence/absence of ear canal

The system differentiates between congenital and acquired conditions through context analysis and temporal markers in the documentation.