B02.21 – Postherpetic geniculate ganglionitis
ICD-10-CM 2027 diagnosis code · Viral infections characterized by skin and mucous membrane lesions
- Code
B02.21(claims format:B0221)- Description
- Postherpetic geniculate ganglionitis
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 1. Certain infectious and parasitic diseases (A00-B99)
- Block
- B00-B09 Viral infections characterized by skin and mucous membrane lesions
- Parent codes
- B02 › B02.2
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
B02 – Zoster [herpes zoster]
- shingles
- zona
Index terms for B02.21
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Syndrome, Hunt's
- Hunt's, neuralgia
- Ganglionitis, gasserian
- Disease, diseased, Hunt's
- Ganglionitis, herpes zoster
- Hunt's, disease or syndrome
- Neuralgia, neuralgic, Hunt's
- Ramsay-Hunt disease or syndrome
- Ganglionitis, postherpetic geniculate
- Neuritis, geniculate ganglion, due to herpes
- Herpes, herpesvirus, herpetic, zoster, oticus
- Ganglionitis, geniculate, postherpetic, postzoster
- Herpes, herpesvirus, herpetic, zoster, auricularis
- Herpes, herpesvirus, herpetic, geniculate ganglionitis
- Herpes, herpesvirus, herpetic, zoster, geniculate ganglionitis
Related codes in B02.2
Frequently asked questions
What is ICD-10 code B02.21?
B02.21 is the ICD-10-CM code for postherpetic geniculate ganglionitis, in the block B00-B09 (Viral infections characterized by skin and mucous membrane lesions).
Is B02.21 a billable code?
Yes. B02.21 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does B02.21 belong to?
It belongs to category B02 – Zoster [herpes zoster].
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.