O01.9

Billable
ChapterO00–O9A
Ranksubcategory
Official Description

Hydatidiform mole, unspecified

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

Instructional Notes

Includes
  • Trophoblastic disease NOS
  • Vesicular mole NOS
General instructions are available for the parent sections:
View CH15 NotesView O00-O08 NotesView O01 Notes

Clinical Hierarchy

CH15Pregnancy, childbirth and the puerperium (O00-O9A)
O00-O08Pregnancy with abortive outcome (O00-O08)
O01Hydatidiform mole
O01.9Hydatidiform mole, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O01.9:

categoryO01
Hydatidiform mole
View context instructions
blockO00-O08
Pregnancy with abortive outcome (O00-O08)
View context instructions
chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to O01.9. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

5 raw paths
Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered)1 unique routes
Direct index entry→O01.9
Mole (pigmented)1 unique routes
hydatid, hydatidiform (benign) (complicating pregnancy) (delivered) (undelivered)→O01.9
Pregnancy (single) (uterine)2 unique routes
complicated by (care of) (management affected by)
hydatidiform mole→O01.9
molar NEC
hydatidiform→O01.9
Trophoblastic disease1 unique routes
Direct index entry→O01.9

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 817
Other Antepartum Diagnoses with O.R. Procedures with MCC
DRG 818
Other Antepartum Diagnoses with O.R. Procedures with CC
DRG 819
Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
DRG 831
Other Antepartum Diagnoses without O.R. Procedures with MCC
DRG 832
Other Antepartum Diagnoses without O.R. Procedures with CC
DRG 833
Other Antepartum Diagnoses without O.R. Procedures without CC/MCC

Cross Reference

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