Post Herpetic Neuralgia ICD-10-CM Codes

Explore the key ICD-10 codes for diagnosing Postherpetic Neuralgia, a painful shingles complication. Learn about their clinical significance and usage.

By Audrey Liz Perez on Aug 8, 2025.

Fact Checked by Ericka Pingol.

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What ICD-10 Codes are Used for Post Herpetic Neuralgia

Postherpetic neuralgia (PHN) is a severe, long-lasting pain that can persist after an episode of shingles. It represents one of the most common complications of the disease. The International Classification of Diseases, 10th Edition (ICD-10), provides specific codes for accurately documenting this condition and its various forms. Let's delve deeper into the commonly used ICD-10 codes for postherpetic neuralgia:

B02.29: This code signifies herpes zoster with other nervous system complications. It encompasses postherpetic neuralgia, a persistent nerve pain following a shingles outbreak.
B02.22: This code is designated for postherpetic trigeminal neuralgia. This unique form of PHN affects the trigeminal nerve, which is responsible for facial sensation and motor functions such as biting and chewing.
B02.23: This code is used for postherpetic polyneuropathy. It suggests the condition has affected multiple peripheral nerves, leading to altered sensations or weakness in different body parts.
B02.21: This code is assigned for postherpetic geniculate ganglionitis. This is a rare complication of herpes zoster, where the facial nerve is affected, causing severe ear pain and facial weakness.
B02.0: This code is used for herpes zoster with nervous system involvement. It includes situations where postherpetic neuralgia might be present.
G53.0*: This code is used for postzoster neuralgia. This term is often used interchangeably with postherpetic neuralgia, emphasizing that it occurs following an episode of shingles.

These ICD-10 codes are essential for healthcare providers to accurately document the presence of PHN in a patient's medical record, facilitating communication between different healthcare professionals and playing a critical role in the billing process.

Postherpetic neuralgia is more than just a lasting pain; it's a condition that can significantly impact a patient's quality of life. Thus, understanding these codes and their applications is crucial for the correct diagnosis, treatment planning, and management of this condition.

Watch our detailed explainer video on Post Herpetic Neuralgia ICD Codes for a more comprehensive understanding.

Which Post Herpetic Neuralgia ICD codes are Billable:

B02.29: Yes
B02.22: Yes
B02.23: Yes
B02.2x: Yes

Clinical Information

Postherpetic neuralgia (PHN): This condition is a common complication of shingles, characterized by persistent and often severe nerve pain. It typically occurs in areas where the shingles rash is present.
Nerve Damage: PHN arises when damaged nerve fibers send confused and exaggerated pain messages from your skin to your brain. The nerves, impaired by the shingles infection, miscommunicate, creating a heightened perception of pain.
Pain Severity: The discomfort associated with PHN can be severe and long-lasting. Patients often describe it as burning, sharp, jabbing, deep, and aching pain. It can persist for months or even years after the shingles rash has healed.
Unpredictable Occurrence: It remains unclear why some individuals with shingles develop PHN while others do not. Factors such as age, the severity of shingles rash, and other comorbid conditions might play a role.
Sensitivity Issues: Individuals suffering from PHN may experience extreme sensitivity to touch and temperature changes. A breeze, light touch, or temperature change can trigger intense pain.
Impact on Quality of Life: PHN can significantly impact a person's quality of life. The constant pain can lead to sleep disturbances, fatigue, depression, and anxiety.
Treatment Goals: The primary aim of treatment for PHN is pain management. However, treating PHN effectively can be challenging due to the complex nature of neuropathic pain. Common treatments include topical creams, nerve block injections, medications, and, in some cases, electrical nerve stimulators.
Preventive Measures: Vaccination against shingles can reduce the risk of developing postherpetic neuralgia. The Shingrix vaccine is recommended for adults 50 years and older to prevent shingles and their associated complications.

Understanding these clinical aspects can help patients and healthcare professionals manage PHN more effectively.

Synonyms Include:

Herpes zoster neuralgia
Neuralgia, postherpetic
Post-zoster pain
Zoster-associated pain
Shingles-related neuralgia

Commonly asked questions

An ICD code for postherpetic neuralgia should be used when documenting a confirmed condition diagnosis in a patient's medical record.

Treatments for postherpetic neuralgia include medications like topical creams, anticonvulsants, antidepressants, opioids, and even procedures like nerve blocks.

A diagnosis code for postherpetic neuralgia represents a confirmed medical diagnosis. It is used for documentation, billing, and statistical purposes.

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