ICD-10 Code L98.A313 – Non-pressure chronic ulcer of right hand with necrosis of muscle (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L98.A313 – Non-pressure chronic ulcer of right hand with necrosis of muscle
What it is
This code identifies a chronic, non-pressure ulcer on the right hand that extends into muscle tissue and has necrosis. Use it when the record clearly documents both the ulcer location and the depth of tissue loss.
Clinical signs
Typical documentation includes a persistent open wound on the right hand with nonhealing tissue breakdown and muscle involvement. Clinical features vary; refer to documentation for evidence of necrotic tissue, chronicity, and exact anatomic site.
When to use this code
Use L98.A313 when the provider describes a chronic ulcer of the right hand and specifies necrosis of muscle. It is appropriate when the note supports a non-pressure etiology and confirms the ulcer is on the right hand. If laterality, depth, or chronicity is unclear, check documentation before coding.
Do not use for
Do not use this code for pressure ulcers, acute traumatic wounds, or ulcers without muscle necrosis. Also avoid it when the record does not clearly identify the right hand or the chronic non-pressure nature of the lesion.
Coding tip
Match the coded depth to the deepest documented tissue involvement, and verify laterality before assigning L98.A313.