ICD-10-CM 2027
ICD-10 code for Hydatid cyst
From the official ICD-10-CM alphabetic index entry “Cyst (colloid) (mucous) (simple) (retention) › hydatid”. Page updated September 29, 2026.
About coding Hydatid cyst
The ICD-10-CM code for Hydatid cyst is B67.90 (Echinococcosis, unspecified). The official index lists 7 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on B67.90.
Within B67.9, choose B67.90 (Echinococcosis, unspecified) only when documentation doesn't support a more specific option: other echinococcosis (B67.99).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
In MS-DRG v44.0, it is part of the grouping logic for DRG 867 (Other Infectious and Parasitic Diseases Diagnoses with MCC, relative weight 2.1859), DRG 868 (Other Infectious and Parasitic Diseases Diagnoses with CC, relative weight 1.0235) and DRG 869 (Other Infectious and Parasitic Diseases Diagnoses without CC/MCC, relative weight 0.6787), in MDC 18 (Infectious and Parasitic Diseases, Systemic or Unspecified Sites), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
More specific Hydatid cyst codes (official index)
- brain B67.99 — Other echinococcosis
- liver B67.8 — Echinococcosis, unspecified, of liver
- lung NEC B67.99 — Other echinococcosis
- Morgagni
- female Q50.5 — Embryonic cyst of broad ligament
- male (epididymal) Q55.4 — Other congenital malformations of vas deferens, epididymis, seminal vesicles and prostate
- testicular Q55.29 — Other congenital malformations of testis and scrotum
- specified site NEC B67.99 — Other echinococcosis
Common questions about Hydatid cyst ICD-10 codes
What is the ICD-10 code for Hydatid cyst?
- B67.90 — Echinococcosis, unspecified. More specific codes apply when the documentation supports them: B67.99, B67.8, B67.99, Q50.5 and others below.
What is the ICD-10 code for brain hydatid cyst?
- B67.99 — Other echinococcosis.
What is the ICD-10 code for liver hydatid cyst?
- B67.8 — Echinococcosis, unspecified, of liver.
What is the ICD-10 code for lung nec hydatid cyst?
- B67.99 — Other echinococcosis.
Is B67.90 billable?
- Yes. B67.90 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can B67.90 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict B67.90 as a principal diagnosis.
Is B67.90 a CC or MCC?
- B67.90 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.