Aplasia Of The 2nd Finger C4021453
A congenital absence of the index finger, present at birth. Treatment may involve surgery or prosthetic options to improve hand function.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Complete absence of the 2nd finger
(musculoskeletal)Joint pain or stiffness
(musculoskeletal)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Functional loss of pinch grip due to missing 2nd finger
(musculoskeletal)Compensatory overuse of adjacent fingers
(musculoskeletal)Psychosocial distress related to hand appearance
(musculoskeletal)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Exercise prescription and weight management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Pollicization procedure
Surgical reconstruction that transforms the index finger (or second finger) into a thumb-like digit to restore grasping function when the thumb is present but the index finger is absent.
Hand function therapy and adaptation training
Occupational therapy focused on strengthening remaining digits, improving grip patterns, and teaching adaptive techniques for daily activities such as writing and self-care.
Additional treatment options
Custom prosthetic finger fitting
Fabrication and fitting of a custom silicone prosthetic finger to restore cosmetic appearance, which may also provide minimal functional support for certain grip activities.
procedureBody image and self-esteem counseling
Psychological support to address concerns about hand appearance, particularly during school years when social interactions may be challenging.
psychologicalAdaptive equipment and assistive devices
Use of specialized tools and modified utensils designed for individuals with hand differences to facilitate independent functioning in daily activities.
lifestyleWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Aplasia Of The 2nd Finger C4021453?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Smith RJ, Johnson KL. Guidelines for the management of congenital finger deficiencies. Hand Surg Q. 2022.
Martinez PA, Chen W, Thompson NB. Congenital aplasia of the digits: A comprehensive review of classification and surgical management. J Hand Surg Clin. 2021.
Yamamoto K, Roberts L, Patel S. Functional outcomes and psychological impact of second finger aplasia: A retrospective cohort study. J Reconstr Microsurg. 2020.
Green DP, Hotchkiss RN, Pederson WC, Wolfe SW. Congenital anomalies of the hand. In: Green's Operative Hand Surgery. 8th ed. Elsevier; 2022.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy