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M81.8 vs N99.84

M81.8 (Other osteoporosis without current pathological fracture) compared with N99.84 (Postprocedural hematoma and seroma of a genitourinary system organ or structure following a procedure), from the official CMS tabular data. Both may be reported when both conditions are documented (Excludes2).

Relationship

Informational

Excludes2 relationship

N99.84
Postprocedural hematoma and seroma of a genitourinary system organ or structure following a procedure
↔
M81.8
Other osteoporosis without current pathological fracture

Distinct conditions — both may be reported.

“postoophorectomy osteoporosis without current pathological fracture (M81.8)”

An Excludes2 note means the excluded condition is not part of the code above it, but a patient can have both. Report both when both are documented.

Source: CMS ICD-10-CM tabular instructional notes

Can these codes be reported together?

Yes, when both are documented. N99.84 carries an Excludes2 note covering M81.8: “postoophorectomy osteoporosis without current pathological fracture (M81.8)”

Excludes2 marks distinct conditions — both may be reported when both are documented.

Side by side

M81.8Other osteoporosis without current pathological fractureN99.84Postprocedural hematoma and seroma of a genitourinary system organ or structure following a procedure
Billing statusBillableNon-billable header
ClassificationM00-M99 — Diseases of the Musculoskeletal System and Connective Tissue (M00-M99)N00-N99 — Diseases of the Genitourinary System (N00-N99)
DefinitionOther osteoporosis without current pathological fracture is a billable ICD-10-CM diagnosis code (M81.8).Postprocedural hematoma and seroma of a genitourinary system organ or structure following a procedure is a non-billable ICD-10-CM category code (N99.84).
Includes
Drug-induced osteoporosis without current pathological fracture
Idiopathic osteoporosis without current pathological fracture
Osteoporosis of disuse without current pathological fracture
Postoophorectomy osteoporosis without current pathological fracture
—
Use additional code
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
code to identify:
major osseous defect, if applicable (M89.7-)
—
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Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources