DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

B18 Chronic viral hepatitis

  • Header · not billable

B18 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

Index → code

  • Carrier (suspected) ofHB (c)(s)-AG → B18.1
  • Carrier (suspected) ofhepatitis (viral) → B18.9
  • Carrier (suspected) ofHAA (hepatitis Australian-antigen) → B18.8

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B15-B19 Viral hepatitis (B15-B19)
  3. B18 Chronic viral hepatitis
Billable codes
5
Subdivisions
5
CC / MCC codes
4 / 0
HCC V28 codes
5
New FY2027
0
Index entries
23

Codes in B18

  1. B18.0
    Chronic viral hepatitis B with delta-agent
    BillableCC65
  2. B18.1
    Chronic viral hepatitis B without delta-agent
    BillableCC65
    Inclusion terms 2

    Inclusion terms

    • Carrier of viral hepatitis B
    • Chronic (viral) hepatitis B
  3. B18.2
    Chronic viral hepatitis C
    Billable65
    Inclusion terms 1

    Inclusion terms

    • Carrier of viral hepatitis C
  4. B18.8
    Other chronic viral hepatitis
    BillableCC65
    Inclusion terms 1

    Inclusion terms

    • Carrier of other viral hepatitis
  5. B18.9
    Chronic viral hepatitis, unspecified
    BillableCC65
    Inclusion terms 1

    Inclusion terms

    • Carrier of unspecified viral hepatitis

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At B18

Includes

  • Carrier of viral hepatitis

Use additional code

  • code, if applicable, for ascites (R18.8) R18.8

Notes that also apply

Block B15-B19 instructions (Excludes1 1, Excludes2 2): printed on the block page.

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Carrier (suspected) ofHB (c)(s)-AG → B18.1
  • Carrier (suspected) ofHAA (hepatitis Australian-antigen) → B18.8
  • Carrier (suspected) ofhepatitis (viral) → B18.9
  • HepatitisDchronic → B18.0
  • Carrier (suspected) ofhepatitis (viral)B surface antigen (HBsAg) → B18.1
  • HepatitisBchronic → B18.1
  • Serumhepatitiscarrier (suspected) of → B18.1
  • Carrier (suspected) ofhepatitis (viral)C → B18.2
  • HepatitisC (viral)chronic → B18.2
  • Carrier (suspected) ofhepatitis (viral)Australia-antigen (HAA) → B18.8
  • Carrier (suspected) ofhepatitis (viral)specified NEC → B18.8
  • Hepatitisinfectious, infectivechronic → B18.9
  • Hepatitisviral, viruschronic → B18.9
  • HepatitisBchronicwith delta-agent → B18.0
  • Hepatitisviral, viruschronicspecified NEC → B18.8
  • Hepatitisviral, viruschronictypeD → B18.0
  • Hepatitisviral, virustypeDchronic → B18.0
  • Hepatitisviral, viruschronictypeB → B18.1
  • Hepatitisviral, virustypeBchronic → B18.1
  • Hepatitisviral, viruschronictypeC → B18.2
  • Hepatitisviral, virustypeCchronic → B18.2
  • Hepatitisviral, viruschronictypeBwith delta-agent → B18.0
  • Hepatitisviral, virustypeBchronicwith delta-agent → B18.0

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy