M79.645 – Pain in Left Finger(s)

Learn about the diagnosis, billability, clinical info, synonyms, and common ICD-10 codes for M79.645 - Pain in Left Finger(s) in this guide by Carepatron.

By Chloe Smith on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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M79.645 diagnosis code: Pain in left finger(s)

M79.645 is an ICD-10-CM diagnosis code representing pain in the left finger(s).
It is a code under the code range M00-M99: Diseases of the musculoskeletal system and connective tissue. More specifically, under M79: Other (and) unspecified soft tissue disorders, not elsewhere classified
This code is used to document localized pain, specifically in the fingers of the left hand.
It is important to note that this code is specific to pain symptoms and does not provide information about the underlying cause of the pain.
The pain may be described as aching, throbbing, sharp, or dull and can range in intensity from mild to severe.
It can be associated with various conditions such as injury, inflammation, infection, nerve impingement, or arthritis affecting the fingers.
Proper documentation and coding of M79.645 are essential for accurate medical records, appropriate treatment planning, and billing purposes.

Is M79.645 billable?

Yes, M79.645 is a billable diagnosis code. Healthcare providers can use this code to justify the medical necessity and reimbursement for services related to pain in the left finger(s). Moreover, ensuring that the documentation supports the diagnosis and that the services provided align with the identified condition is crucial to accurately billing using this code.

Clinical information

Pain in the left finger(s) refers to the subjective perception of discomfort or unpleasant sensations in the fingers of the left hand.
The pain may be localized to a specific finger or involve multiple fingers.
Various factors, including trauma, overuse, repetitive motion injuries, nerve compression, inflammation, infections, or underlying conditions such as arthritis, can cause it.
Additional clinical information is necessary to determine the underlying cause of the pain, including medical history, physical examination findings, imaging studies, and laboratory tests.
Proper evaluation and diagnosis are crucial to developing an appropriate treatment plan tailored to the specific cause of the pain.

Synonyms include

Left finger pain
Pain in fingers, left hand
Left digital pain
Left hand finger pain
Left hand digit pain
Left thumb pain

Other ICD-10 codes commonly used for finger pain

M79.644 - Pain in right finger(s)
M79.646 - Pain in unspecified finger(s)

Commonly asked questions

Pain in the left finger(s) can have various causes, including trauma or injury, arthritis, tendonitis, nerve compression, infections, overuse, or inflammatory conditions.

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Diagnosing the underlying cause of pain in the left finger(s) typically involves a thorough medical history assessment, physical examination, imaging studies (such as X-rays or MRI), and sometimes laboratory tests to identify the specific cause.

Treatment for pain in the left finger(s) depends on the underlying cause and may include rest, pain management techniques, physical therapy, medication, splinting, immobilization, or in some cases, surgical intervention to address the root cause.

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