M47.21 — Other spondylosis with radiculopathy, occipito-atlanto-axial region
Is M47.21 billable?
Yes — M47.21 is billable for FY2027. M47.21 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. M47.21 may be submitted for encounters from October 1, 2026 through September 30, 2027.
M47.21 at a glance
| Code | M47.21 |
|---|---|
| Description | Other spondylosis with radiculopathy, occipito-atlanto-axial region |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does M47.21 group to?
M47.21 sits in MDC 08 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 551Medical Back Problems with MCCmedical
- 552Medical Back Problems without MCCmedical
How is M47.21 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to M47.21. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Spondylosis › with › radiculopathy › occipito-atlanto-axial region
Excludes2 — not included here — inherited from Chapter 13
The conditions below are not part of M47.21, but a patient may have both at the same time. When documentation supports it, M47.21 and the excluded code may both be reported.
- arthropathic psoriasis (L40.5-)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- compartment syndrome (traumatic) (T79.A-)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- 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 M47.21 existed?
M47.21 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.
Which conditions are coded to M47.21?
What other codes are in the M47.2 family? (8)
- M47.20Other spondylosis with radiculopathy, site unspecified
- M47.22Other spondylosis with radiculopathy, cervical region
- M47.23Other spondylosis with radiculopathy, cervicothoracic region
- M47.24Other spondylosis with radiculopathy, thoracic region
- M47.25Other spondylosis with radiculopathy, thoracolumbar region
- M47.26Other spondylosis with radiculopathy, lumbar region
- M47.27Other spondylosis with radiculopathy, lumbosacral region
- M47.28Other spondylosis with radiculopathy, sacral and sacrococcygeal region