DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A68 Relapsing fevers

  • Header · not billable

A68 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Relapsing fever → A68.9
  • Carapata (disease) → A68.0
  • Novy's relapsing fever → A68.9

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A65-A69 Other spirochetal diseases (A65-A69)
  3. A68 Relapsing fevers
Billable codes
3
Subdivisions
3
CC / MCC codes
3 / 0
HCC V28 codes
0
New FY2027
0
Index entries
32

Codes in A68

  1. A68.0
    Louse-borne relapsing fever
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Relapsing fever due to Borrelia recurrentis
  2. A68.1
    Tick-borne relapsing fever
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Relapsing fever due to any Borrelia species other than Borrelia recurrentis
  3. A68.9
    Relapsing fever, unspecified
    BillableCC

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 A68

Includes

  • recurrent fever

Excludes2

  • Lyme disease (A69.2-) A69.2

Notes that also apply

Block A65-A69 instructions (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

  • Carapata (disease) → A68.0
  • Obermeyer's relapsing fever (European) → A68.0
  • Carter's relapsing fever (Asiatic) → A68.1
  • Dutton's relapsing fever (West African) → A68.1
  • Novy's relapsing fever → A68.9
  • Relapsing fever → A68.9
  • Disease, diseasedCarapata → A68.0
  • Novy's relapsing feverlouse-borne → A68.0
  • Relapsing feverlouse-borne (epidemic) → A68.0
  • Relapsing feverObermeyer's (European) → A68.0
  • Spirillumobermeieri infection → A68.0
  • Africantick fever → A68.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)African tick-borne → A68.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)mianeh → A68.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)South African tick-bite → A68.1
  • Novy's relapsing fevertick-borne → A68.1
  • Relapsing feverCarter's (Asiatic) → A68.1
  • Relapsing feverDutton's (West African) → A68.1
  • Relapsing feverNovy's (American) → A68.1
  • Relapsing fevertick-borne (endemic) → A68.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia) → A68.9
  • Koch'srelapsing fever → A68.9
  • Relapsing feverKoch's → A68.9
  • Relapsing feverSpirillum → A68.9
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)louse-borne → A68.0
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)Obermeyer's (European) → A68.0
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)Carter's (Asiatic) → A68.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)Dutton's (West African) → A68.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)tick-borne → A68.1
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)Koch's → A68.9
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)Novy'slouse-borne → A68.0
  • Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor)relapsing (Borrelia)Novy'stick-borne → A68.1

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

Hierarchy