Congenital malformations of breast (Q83)
ICD-10 code Q83 covers congenital malformations of the breast, including a range of structural abnormalities present at birth such as absent breasts, accessory breast tissue, and nipple anomalies.
The section includes specific codes like Q83.0 for congenital absence of breast with absent nipple, and Q83.1 for accessory breast, which refers to extra breast tissue developing in unusual locations. Q83.2 and Q83.3 specifically address absence of the nipple and accessory nipples respectively, conditions often described by terms like athelia or polythelia syndrome that may be encountered by coders. Q83.8 involves other congenital abnormalities such as nipple inversion, hypoplasia, tubular breast, or asymmetry, while Q83.9 assigns unspecified congenital breast malformations when precise details are missing. Using these codes enables medical professionals to capture the exact congenital breast anomalies, some of which are also referenced under synonyms like "congenital absence of breast," "nipple deformity," or "Ulnar mammary syndrome," thus supporting accurate identification and classification of these unique birth defects.
Instructional Notations
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Clinical Terms
The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.
Choanal Atresia
A congenital abnormality that is characterized by a blocked CHOANAE, the opening between the nose and the NASOPHARYNX. Blockage can be unilateral or bilateral; bony or membranous.
