ICD-10-CM · Chapter 1 · A00–B99
B02.21
Postherpetic geniculate ganglionitis
Certain infectious and parasitic diseases
Quick facts
- Code
- B02.21
- Type
- Billable code
- ICD-10-CM chapter
- Chapter 1 — Certain infectious and parasitic diseases
- Category
- B02 — Zoster [herpes zoster]
- Specificity
- 5 characters
How coders use this code
ICD-10-CM B02.21 is a billable, fully specified code, so it can be reported directly on a claim to document a diagnosis of postherpetic geniculate ganglionitis. Coders assign it when the chart documentation supports this level of detail, always matching to the most specific code available and verifying against the chapter-specific guidelines published annually by NCHS/CMS.
Related codes in B02
- B02Zoster [herpes zoster]
- B02.0Zoster encephalitis
- B02.1Zoster meningitis
- B02.2Zoster with other nervous system involvement
- B02.22Postherpetic trigeminal neuralgia
- B02.23Postherpetic polyneuropathy
- B02.24Postherpetic myelitis
- B02.29Other postherpetic nervous system involvement
- B02.3Zoster ocular disease
- B02.30Zoster ocular disease, unspecified
- B02.31Zoster conjunctivitis
- B02.32Zoster iridocyclitis
- B02.33Zoster keratitis
- B02.34Zoster scleritis
- B02.39Other herpes zoster eye disease
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