---
title: "ICD-10-CM M54.01: Panniculitis affecting regions of neck… | BillingBrief"
description: "M54.01 is panniculitis, inflammation of the fat layer under the skin, in the neck and back area at the occipito-atlanto-axial region, where the top of the…"
canonical: "https://billingbrief.com/icd10/m54.01/"
language: "en"
---

# M54.01 Panniculitis affecting regions of neck and back, occipito-atlanto-axial region

ICD-10-CM · [CMS code reference](#source)

M54.01 is panniculitis, inflammation of the fat layer under the skin, in the neck and back area at the occipito-atlanto-axial region, where the top of the neck meets the skull. If it is documented as lupus panniculitis, use L93.2 instead.

## Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

### Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

-   lupus panniculitis (L93.2)
-   panniculitis NOS ([M79.3](https://billingbrief.com/icd10/m79.3/))
-   relapsing \[Weber-Christian\] panniculitis (M35.6)
-   psychogenic dorsalgia (F45.41)
-   current injury - see injury of spine by body region
-   discitis NOS (M46.4-)

## Related codes

-   [`M54.00` Panniculitis affecting regions of neck and back, site unspecified ICD-10-CM](https://billingbrief.com/icd10/m54.00/)
-   [`M54.02` Panniculitis affecting regions of neck and back, cervical region ICD-10-CM](https://billingbrief.com/icd10/m54.02/)
-   [`M54.03` Panniculitis affecting regions of neck and back, cervicothoracic region ICD-10-CM](https://billingbrief.com/icd10/m54.03/)
-   [`M54.04` Panniculitis affecting regions of neck and back, thoracic region ICD-10-CM](https://billingbrief.com/icd10/m54.04/)
-   [`M54.05` Panniculitis affecting regions of neck and back, thoracolumbar region ICD-10-CM](https://billingbrief.com/icd10/m54.05/)
-   [`M54.06` Panniculitis affecting regions of neck and back, lumbar region ICD-10-CM](https://billingbrief.com/icd10/m54.06/)
-   [`M54.07` Panniculitis affecting regions of neck and back, lumbosacral region ICD-10-CM](https://billingbrief.com/icd10/m54.07/)
-   [`M54.08` Panniculitis affecting regions of neck and back, sacral and sacrococcygeal region ICD-10-CM](https://billingbrief.com/icd10/m54.08/)

## Common questions

### Is M54.01 a billable code?

Yes. M54.01 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.

## From the source

Official description from [CMS](https://www.cms.gov/medicare/coding-billing/icd-10-codes).
ICD-10-CM FY2027 (effective October 1, 2026).

Code set

ICD-10-CM

Category

M54 Dorsalgia

Chapter

Diseases of the musculoskeletal system and connective tissue

Billable

Yes

Educational reference only. Not medical, legal, or billing advice. Always check the current official code set and payer policy before you bill. [About BillingBrief and our sources](https://billingbrief.com/about/).