L03.221 is the authoritative medical code for Cellulitis of neck. This classification is used in medical billing and clinical recording to specify the clinical criteria for cellulitis of neck (ICD-10-CM L03.221), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Cellulitis of neck is a billable ICD-10-CM diagnosis code L03.221. Excludes2 (not included here): cellulitis of anal and rectal region K61.-; cellulitis of external auditory canal H60.1; cellulitis of eyelid H00.0; cellulitis of female external genital organs N76.4; cellulitis of lacrimal apparatus H04.3; cellulitis of male external genital organs (N48.2, N49.-); cellulitis of mouth K12.2; cellulitis of nose J34.0; eosinophilic cellulitis Wells; febrile neutrophilic dermatosis Sweet; lymphangitis chronic subacute I89.1; hordeolum H00.0; infective dermatitis L30.3; local infections of skin classified in Chapter 1; lupus panniculitis L93.2; panniculitis NOS M79.3; panniculitis of neck and back M54.0-; Perlèche NOS K13.0; Perlèche due to candidiasis B37.0; Perlèche due to riboflavin deficiency E53.0; pyogenic granuloma L98.0; relapsing panniculitis Weber-Christian; viral warts B07.-; zoster B02.-. Use additional code: code B95-B97 to identify infectious agent..
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for L03.221 in the official ICD-10-CM tabular list.
Excludes2 — Not Included Here
Conditions not covered by this code, but which may be reported alongside it when both are present.
- cellulitis of anal and rectal region K61.-
- cellulitis of external auditory canal H60.1
- cellulitis of eyelid H00.0
- cellulitis of female external genital organs N76.4
- cellulitis of lacrimal apparatus H04.3
- cellulitis of male external genital organs (N48.2, N49.-)
- cellulitis of mouth K12.2
- cellulitis of nose J34.0
- eosinophilic cellulitis Wells
- febrile neutrophilic dermatosis Sweet
- lymphangitis chronic subacute I89.1
- hordeolum H00.0
- infective dermatitis L30.3
- local infections of skin classified in Chapter 1
- lupus panniculitis L93.2
- panniculitis NOS M79.3
- panniculitis of neck and back M54.0-
- Perlèche NOS K13.0
- Perlèche due to candidiasis B37.0
- Perlèche due to riboflavin deficiency E53.0
- pyogenic granuloma L98.0
- relapsing panniculitis Weber-Christian
- viral warts B07.-
- zoster B02.-
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code B95-B97 to identify infectious agent.
Frequently Asked Questions (FAQ) & Clinical Guidance
Can L03.221 be reported alongside related conditions?
Per Excludes2 instructions, L03.221 and the following may both be reported when both are present: cellulitis of anal and rectal region (K61.-); cellulitis of external auditory canal (H60.1); cellulitis of eyelid (H00.0); cellulitis of female external genital organs (N76.4).
Is an additional code needed with L03.221?
Use additional code(s) to specify: code (B95-B97) to identify infectious agent..
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as L03.221, with their registry titles.
- L03 — Cellulitis and acute lymphangitis
- L03.0 — Cellulitis and acute lymphangitis of finger and toe
- L03.01 — Cellulitis of finger
- L03.011 — Cellulitis of right finger
- L03.012 — Cellulitis of left finger
- L03.019 — Cellulitis of unspecified finger
- L03.02 — Acute lymphangitis of finger
- L03.021 — Acute lymphangitis of right finger
- L03.022 — Acute lymphangitis of left finger
- L03.029 — Acute lymphangitis of unspecified finger
- L03.03 — Cellulitis of toe
- L03.031 — Cellulitis of right toe
- L03.032 — Cellulitis of left toe
- L03.039 — Cellulitis of unspecified toe
- L03.04 — Acute lymphangitis of toe
- L03.041 — Acute lymphangitis of right toe
- L03.042 — Acute lymphangitis of left toe
- L03.049 — Acute lymphangitis of unspecified toe
- L03.1 — Cellulitis and acute lymphangitis of other parts of limb
- L03.11 — Cellulitis of other parts of limb
- L03.111 — Cellulitis of right axilla
- L03.112 — Cellulitis of left axilla
- L03.113 — Cellulitis of right upper limb
- L03.114 — Cellulitis of left upper limb
- L03.115 — Cellulitis of right lower limb
- L03.116 — Cellulitis of left lower limb
- L03.119 — Cellulitis of unspecified part of limb
- L03.12 — Acute lymphangitis of other parts of limb
- L03.121 — Acute lymphangitis of right axilla
- L03.122 — Acute lymphangitis of left axilla
- L03.123 — Acute lymphangitis of right upper limb
- L03.124 — Acute lymphangitis of left upper limb
- L03.125 — Acute lymphangitis of right lower limb
- L03.126 — Acute lymphangitis of left lower limb
- L03.129 — Acute lymphangitis of unspecified part of limb
- L03.2 — Cellulitis and acute lymphangitis of face and neck
- L03.21 — Cellulitis and acute lymphangitis of face
- L03.211 — Cellulitis of face
- L03.212 — Acute lymphangitis of face
- L03.213 — Periorbital cellulitis
Indexed Clinical Terms (2)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Cellulitis (diffuse) (phlegmonous) (septic) (suppurative), cervical (meaning neck)
- Cellulitis (diffuse) (phlegmonous) (septic) (suppurative), neck (region)
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: