R89.9 — Unspecified abnormal finding in specimens from other organs, systems and tissues

BillableUnspecified

Is R89.9 billable?

Yes, but R89.9 is an unspecified code. R89.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, R89.9 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting R89.9 — the more specific alternatives are listed below.

More specific alternatives

R89.9 at a glance

Code	R89.9
Description	Unspecified abnormal finding in specimens from other organs, systems and tissues
Billable	Yes
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Which MS-DRGs does R89.9 group to?

R89.9 sits in MDC 18 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.

867Other Infectious and Parasitic Diseases Diagnoses with MCCmedical
868Other Infectious and Parasitic Diseases Diagnoses with CCmedical
869Other Infectious and Parasitic Diseases Diagnoses without CC/MCCmedical

How is R89.9 listed in the Alphabetic Index?

These are the routes through the Alphabetic Index that lead to R89.9. They show the wording a clinician may have documented, which often differs from the Tabular description.

Abnormal, abnormality, abnormalities › specimen › specified organ, system and tissue NOS

Excludes1 — never code together — inherited from R83-R89

The conditions below can never be reported together with R89.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

abnormal findings on antenatal screening of mother (O28.-)
diagnostic abnormal findings classified elsewhere - see Alphabetical Index

Excludes2 — not included here — inherited from Chapter 18

The conditions below are not part of R89.9, but a patient may have both at the same time. When documentation supports it, R89.9 and the excluded code may both be reported.

abnormal findings on antenatal screening of mother (O28.-)
certain conditions originating in the perinatal period (P04-P96)
signs and symptoms classified in the body system chapters
signs and symptoms of breast (N63, N64.5)

Excludes2 — not included here — inherited from R83-R89

The conditions below are not part of R89.9, but a patient may have both at the same time. When documentation supports it, R89.9 and the excluded code may both be reported.

abnormal findings on examination of blood, without diagnosis (R70-R79)
abnormal findings on examination of urine, without diagnosis (R80-R82)
abnormal tumor markers (R97.-)

How long has R89.9 existed?

R89.9 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.