DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

B89 diagnosis code · Billable category · FY2027

B89 Unspecified parasitic disease

  • Billable
  • Not CC/MCC
  • POA reported

B89 ICD-10 code: a billable diagnosis code in FY2027; the category has no subdivisions.

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. B85-B89 Pediculosis, acariasis and other infestations (B85-B89)
  3. B89 Unspecified parasitic disease
CC / MCC
Neither
MS-DRG
867-869
HCC V28
–
POA
Reported
Code Editor
–
Index entries
23

Instructions

Notes that also apply

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

Index entries

  • Parasitism → B89
  • Cyst (colloid) (mucous) (simple) (retention)parasitic → B89
  • Disease, diseasedparasitic → B89
  • Infection, infected, infective (opportunistic)parasitic → B89
  • Infestationorbit, parasitic NOS → B89
  • Infestationparasite, parasitic → B89
  • Meningoencephalitisparasitic NEC → B89 [G05.3]
  • Parasiticdisease NEC → B89
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)due to or associated withparasitic disease NEC → B89
  • Arthritis, arthritic (acute) (chronic) (nonpyogenic) (subacute)in (due to)parasitic disease NEC → B89
  • Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute)in (due to)parasitic disease NEC → B89 [G05.3]
  • Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent)in (due to)infectious disease NEC → B89 [G91.4]
  • Hydrocephalus (acquired) (external) (internal) (malignant) (recurrent)in (due to)parasitic disease → B89 [G91.4]
  • Infestationeyelidparasitic NOS → B89
  • Infestationparasite, parasiticeyelid → B89
  • Iridocyclitisin (due to)parasitic disease NOS → B89 [H22]
  • Mastoiditis (coalescent) (hemorrhagic) (suppurative)in (due to)parasitic disease NEC → B89 [H75.0-]
  • Meningitis (basal) (basic) (brain) (cerebral) (cervical) (congestive) (diffuse) (hemorrhagic) (infantile) (membranous) (metastatic) (nonspecific) (pontine) (progressive) (simple) (spinal) (subacute) (sympathetic) (toxic)in (due to)parasitic disease NEC → B89 [G02]
  • Myopathyin (due to)parasitic disease NEC → B89 [G73.7]
  • Polyneuropathy (peripheral)in (due to)parasitic disease NEC → B89 [G63]
  • Neuritis (rheumatoid)acoustic (nerve)in (due to)parasitic disease NEC → B89 [H94.0-]
  • Otitis (acute)externain (due to)parasitic disease NEC → B89 [H62.4-]
  • Palsycranial nervemultipleinparasitic disease → B89 [G53]

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

Medicare grouping and edits

CMS files for B89
CC / MCCNeither
Appendix BMDC 18 Infectious and Parasitic Diseases, Systemic or Unspecified Sites, MS-DRG 867-869 (Other Infectious and Parasitic Diseases Diagnoses with MCC…)
Code Editor–
POAReported
HCC V28–

CMS: MS-DRG v44 (Appendix B, C), MCE v44, POA list FY2027, 2027 Initial ICD-10-CM Mappings. What the rows mean.

Hierarchy