C47.9 — Malignant neoplasm of peripheral nerves and autonomic nervous system, unspecified
Is C47.9 billable?
Yes, but C47.9 is an unspecified code. C47.9 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, C47.9 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 C47.9 — the more specific alternatives are listed below.
More specific alternatives
- C47.0Malignant neoplasm of peripheral nerves of head, face and neck
- C47.1Malignant neoplasm of peripheral nerves of upper limb, including shouldernot billable
- C47.2Malignant neoplasm of peripheral nerves of lower limb, including hipnot billable
- C47.3Malignant neoplasm of peripheral nerves of thorax
- C47.4Malignant neoplasm of peripheral nerves of abdomen
- C47.5Malignant neoplasm of peripheral nerves of pelvis
- C47.8Malignant neoplasm of overlapping sites of peripheral nerves and autonomic nervous system
C47.9 at a glance
| Code | C47.9 |
|---|---|
| Description | Malignant neoplasm of peripheral nerves and autonomic nervous system, unspecified |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does C47.9 group to?
C47.9 sits in MDC 08 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.
- 542Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy with MCCmedical
- 543Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy with CCmedical
- 544Pathological Fractures and Musculoskeletal and Connective Tissue Malignancy without CC/MCCmedical
As a secondary diagnosis, C47.9 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
Inclusion terms
Alternative wording in documentation that is classified to C47.9.
- Malignant neoplasm of unspecified site of peripheral nerves and autonomic nervous system
Excludes1 — never code together — inherited from C47
The conditions below can never be reported together with C47.9 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Kaposi's sarcoma of soft tissue (C46.1)
How long has C47.9 existed?
C47.9 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.
What other codes are in the C47 family? (8)
- C47.0Malignant neoplasm of peripheral nerves of head, face and neck
- C47.1Malignant neoplasm of peripheral nerves of upper limb, including shouldernot billable
- C47.2Malignant neoplasm of peripheral nerves of lower limb, including hipnot billable
- C47.3Malignant neoplasm of peripheral nerves of thorax
- C47.4Malignant neoplasm of peripheral nerves of abdomen
- C47.5Malignant neoplasm of peripheral nerves of pelvis
- C47.6Malignant neoplasm of peripheral nerves of trunk, unspecified
- C47.8Malignant neoplasm of overlapping sites of peripheral nerves and autonomic nervous system