Congenital lens malformations (Q12)
The ICD-10 code section Q12 covers congenital lens malformations, which include various birth defects affecting the eye’s lens structure from cataracts to lens displacement. These codes help specify different types of lens abnormalities diagnosed at or shortly after birth.
The most commonly used code, Q12.0, refers to congenital cataract, which encompasses numerous specific cataract types such as pulverulent, lamellar, or posterior polar cataracts. Synonyms like Hutterite type cataract and familial cataract syndromes aid coders in accurately linking clinical terminology to this code. Q12.1 describes congenital displaced lens, also called ectopia lentis, which involves the lens shifting from its normal position. The code Q12.2 is assigned to coloboma of lens, a condition with lens defects due to incomplete development. Other codes include Q12.3 for congenital aphakia (absence of the lens), Q12.4 for spherophakia (abnormally spherical lens), and Q12.8 covering other rare lens malformations like lenticonus and persistent fetal vasculature. Q12.9 is used when the congenital lens malformation is unspecified but suspected based on anomalies like lens shape or pigmentation. These codes assist healthcare professionals in precisely documenting and billing for various congenital lens defects encountered in ophthalmology.
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.
Endocardial Fibroelastosis
A condition characterized by the thickening of ENDOCARDIUM due to proliferation of fibrous and elastic tissue, usually in the left ventricle leading to impaired cardiac function (CARDIOMYOPATHY, RESTRICTIVE). It is most commonly seen in young children and rarely in adults. It is often associated with congenital heart anomalies (HEART DEFECTS CONGENITAL;) INFECTION; or gene mutation. Defects in the tafazzin protein, encoded by TAZ gene, result in a form of autosomal dominant familial endocardial fibroelastosis.
