D71.9 — Functional disorders of polymorphonuclear neutrophils, unspecified
Is D71.9 billable?
Yes, but D71.9 is an unspecified code. D71.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, D71.9 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 D71.9 — the more specific alternatives are listed below.
More specific alternatives
D71.9 at a glance
| Code | D71.9 |
|---|---|
| Description | Functional disorders of polymorphonuclear neutrophils, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does D71.9 group to?
D71.9 sits in MDC 16 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.
- 808Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with MCCmedical
- 809Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders with CCmedical
- 810Major Hematological and Immunological Diagnoses Except Sickle Cell Crisis and Coagulation Disorders without CC/MCCmedical
How is D71.9 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to D71.9. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Disorder › functional polymorphonuclear neutrophils (of)
- Disorder › neutrophil, polymorphonuclear (of)
- Disorder › polymorphonuclear neutrophils (of)
Excludes2 — not included here — inherited from Chapter 3
The conditions below are not part of D71.9, but a patient may have both at the same time. When documentation supports it, D71.9 and the excluded code may both be reported.
- autoimmune disease (systemic) NOS (M35.9)
- certain conditions originating in the perinatal period (P00-P96)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- human immunodeficiency virus [HIV] disease (B20)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
How long has D71.9 existed?
D71.9 first appears in FY2026.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.