Is ICD-10-CM code B00 billable?

No, B00 (Herpesviral [herpes simplex] infections) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code B00 belong to?

B00 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

B00Not billable, use a more specific code below

Herpesviral [herpes simplex] infections

In Viral infections characterized by skin and mucous membrane lesions (B00-B09), chapter 1: Certain Infectious and Parasitic Diseases

15 billable codes under B00: 4 are an MCC, 8 are a CC; 2 map to HCC 2 (Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock), HCC 182 (Spinal Cord Disorders/Injuries).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

Instructional notes

Excludes1: not coded here, use a different code

congenital herpesviral infections (P35.2)

Excludes2: not included here, code separately if applicable

anogenital herpesviral infection (A60.-)
gammaherpesviral mononucleosis (B27.0-)
herpangina (B08.5)

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.

Human Immunodeficiency Virus (HIV) Infections (page 19)
Infectious agents as the cause of diseases classified to other chapters (page 22)
Infections resistant to antibiotics (page 22)
Sepsis, Severe Sepsis, and Septic Shock (page 23)
Methicillin Resistant Staphylococcus aureus (MRSA) Conditions (page 27)
Zika virus infections (page 28)
Coronavirus infections (page 28)

Read Section I.C.1 (page 19)

All codes under B00

B00 can't be used on a claim. Pick a billable code below; grey headings group them.

B00 MS-DRGs

As the principal diagnosis, the billable codes under B00 group to these 30 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 974 HIV with Major Related Condition with MCC (13 of 15 codes)
DRG 975 HIV with Major Related Condition with CC (13 of 15 codes)
DRG 976 HIV with Major Related Condition without CC/MCC (13 of 15 codes)
DRG 791 Prematurity with Major Problems (12 of 15 codes)
DRG 793 Full Term Neonate with Major Problems (12 of 15 codes)
DRG 124 Other Disorders of the Eye with MCC or Thrombolytic Agent (5 of 15 codes)
DRG 125 Other Disorders of the Eye without MCC (5 of 15 codes)
DRG 023 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator (3 of 15 codes)
DRG 024 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC (3 of 15 codes)
DRG 097 Non-Bacterial Infection of Nervous System Except Viral Meningitis with MCC (2 of 15 codes)
DRG 098 Non-Bacterial Infection of Nervous System Except Viral Meningitis with CC (2 of 15 codes)
DRG 099 Non-Bacterial Infection of Nervous System Except Viral Meningitis without CC/MCC (2 of 15 codes)
DRG 606 Minor Skin Disorders with MCC (2 of 15 codes)
DRG 607 Minor Skin Disorders without MCC (2 of 15 codes)
DRG 075 Viral Meningitis with CC/MCC (1 of 15 codes)
DRG 076 Viral Meningitis without CC/MCC (1 of 15 codes)
DRG 154 Other Ear, Nose, Mouth and Throat Diagnoses with MCC (1 of 15 codes)
DRG 155 Other Ear, Nose, Mouth and Throat Diagnoses with CC (1 of 15 codes)
DRG 156 Other Ear, Nose, Mouth and Throat Diagnoses without CC/MCC (1 of 15 codes)
DRG 157 Dental and Oral Diseases with MCC (1 of 15 codes)
DRG 158 Dental and Oral Diseases with CC (1 of 15 codes)
DRG 159 Dental and Oral Diseases without CC/MCC (1 of 15 codes)
DRG 393 Other Digestive System Diagnoses with MCC (1 of 15 codes)
DRG 394 Other Digestive System Diagnoses with CC (1 of 15 codes)
DRG 395 Other Digestive System Diagnoses without CC/MCC (1 of 15 codes)
DRG 865 Viral Illness with MCC (1 of 15 codes)
DRG 866 Viral Illness without MCC (1 of 15 codes)
DRG 870 Septicemia or Severe Sepsis with MV >96 Hours (1 of 15 codes)
DRG 871 Septicemia or Severe Sepsis without MV >96 Hours with MCC (1 of 15 codes)
DRG 872 Septicemia or Severe Sepsis without MV >96 Hours without MCC (1 of 15 codes)

Other codes that refer to B00

Notes on these codes point to B00.

B10 Excludes2: herpes simplex (B00.-)
B10 Excludes2: human herpesvirus NOS (B00.-)
B10 Excludes2: human herpesvirus 1 and 2 (B00.-)
D81.82 Code Also: herpes virus infections (B00.-)
H67 Code First: viral disease NEC (B00-B34)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Herpes Simplex

Herpes is an infection that is caused by a herpes simplex virus (HSV). Oral herpes causes cold sores around the mouth or face. Genital herpes affects the genitals, buttocks or anal area. Genital herpes is a sexually transmitted infection (STI). It affects the genitals, buttocks or anal area. Other herpes infections can affect the eyes, skin, or other parts of the body. The virus can be dangerous in newborn babies or in people with weak immune systems.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.