M54.00 Panniculitis affecting regions of neck and back, site unspecified

Billable ICD-10-CM code, FY2026.

Applies from M54 Dorsalgia

Excludes1 (never code together)

• psychogenic dorsalgia (F45.41)

Applies from M54.0 Panniculitis affecting regions of neck and back

Excludes1 (never code together)

• lupus panniculitis (L93.2)
• panniculitis NOS (M79.3)
• relapsing [Weber-Christian] panniculitis (M35.6)

MS-DRG index

Defines the logic of DRG(s) 606-607 in MDC 09.

Approximate ICD-9-CM (GEMs)

• 723.6 Panniculitis specified as affecting neck (approximate)

Code annotations containing back-references to M54.00

Back-references to M54.0

• Type 1 Excludes: L95 Vasculitis limited to skin, not elsewhere classified ("panniculitis of neck and back (M54.0-)")
• Type 1 Excludes: M79.3 Panniculitis, unspecified ("neck and back panniculitis (M54.0-)")

Back-references to M54

• Type 1 Excludes: G55 Nerve root and plexus compressions in diseases classified elsewhere ("nerve root compression (due to) (in) dorsopathies (M53.-, M54.-)")
• Type 2 Excludes: G89 Pain, not elsewhere classified ("spine pain (M54.-)")
• Type 2 Excludes: R10 Abdominal and pelvic pain ("dorsalgia (M54.-)")
• Type 1 Excludes: R52 Pain, unspecified ("spine pain (M54.-)")

Diagnosis Index entries for M54.00

• Panniculitis (nodular) (nonsuppurative) › back

Nearby codes

• M54 Dorsalgia
• M54.0 Panniculitis affecting regions of neck and back
• M54.00 Panniculitis affecting regions of neck and back, site unspecified (this code)
• M54.01 Panniculitis affecting regions of neck and back, occipito-atlanto-axial region
• M54.02 Panniculitis affecting regions of neck and back, cervical region
• M54.03 Panniculitis affecting regions of neck and back, cervicothoracic region
• M54.04 Panniculitis affecting regions of neck and back, thoracic region
• M54.05 Panniculitis affecting regions of neck and back, thoracolumbar region