ICD-10-CM 2027
ICD-10 code for acute lymphangitis
From the official ICD-10-CM alphabetic index entry “Lymphangitis › acute”. Page updated September 29, 2026.
About coding acute lymphangitis
The ICD-10-CM code for acute lymphangitis is L03.91 (Acute lymphangitis, unspecified). The official index lists 34 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on L03.91.
Within L03.9, choose L03.91 (Acute lymphangitis, unspecified) only when documentation doesn't support a more specific option: cellulitis, unspecified (L03.90).
Don't report L03.91 together with the conditions in its Excludes1 note: lymphangitis NOS (I89.1).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" MS-DRG of its family, unless the principal diagnosis excludes it.
More specific acute lymphangitis codes (official index)
- abdominal wall L03.321 — Acute lymphangitis of abdominal wall
- ankle
- arm
- auricle (ear)
- axilla L03.12 — Acute lymphangitis of other parts of limb
- back (any part except buttock and flank) L03.322 — Acute lymphangitis of back [any part except buttock and flank]
- buttock L03.327 — Acute lymphangitis of buttock
- cervical (meaning neck) L03.222 — Acute lymphangitis of neck
- cheek (external) L03.212 — Acute lymphangitis of face
- chest wall L03.323 — Acute lymphangitis of chest wall
- digit
- finger
- toe
- ear (external) H60.1 — Cellulitis of external ear
- external auditory canal
- eyelid
- face NEC L03.212 — Acute lymphangitis of face
- finger (intrathecal) (periosteal) (subcutaneous) (subcuticular) L03.02 — Acute lymphangitis of finger
- flank L03.32A — Acute lymphangitis of flank
- foot
- gluteal (region) L03.327 — Acute lymphangitis of buttock
- groin L03.324 — Acute lymphangitis of groin
- hand
- head NEC L03.891 — Acute lymphangitis of head [any part, except face]
- face (any part, except ear, eye and nose) L03.212 — Acute lymphangitis of face
- heel
- hip
- jaw (region) L03.212 — Acute lymphangitis of face
- knee
- leg
- lower limb L03.12 — Acute lymphangitis of other parts of limb
- toe
- navel L03.326 — Acute lymphangitis of umbilicus
- neck (region) L03.222 — Acute lymphangitis of neck
- orbit, orbital
- pectoral (region) L03.323 — Acute lymphangitis of chest wall
- perineal, perineum L03.325 — Acute lymphangitis of perineum
- scalp (any part) L03.891 — Acute lymphangitis of head [any part, except face]
- shoulder
- specified site NEC L03.898 — Acute lymphangitis of other sites
- thigh
- thumb (intrathecal) (periosteal) (subcutaneous) (subcuticular)
- toe (intrathecal) (periosteal) (subcutaneous) (subcuticular) L03.04 — Acute lymphangitis of toe
- trunk L03.329 — Acute lymphangitis of trunk, unspecified
- abdominal wall L03.321 — Acute lymphangitis of abdominal wall
- back (any part except buttock and flank) L03.322 — Acute lymphangitis of back [any part except buttock and flank]
- buttock L03.327 — Acute lymphangitis of buttock
- chest wall L03.323 — Acute lymphangitis of chest wall
- groin L03.324 — Acute lymphangitis of groin
- perineal, perineum L03.325 — Acute lymphangitis of perineum
- umbilicus L03.326 — Acute lymphangitis of umbilicus
- umbilicus L03.326 — Acute lymphangitis of umbilicus
- upper limb L03.12 — Acute lymphangitis of other parts of limb
- axilla
- finger
- thumb
- wrist
Don't confuse with (Excludes1 for L03.91)
- lymphangitis NOS (I89.1)
Common questions about acute lymphangitis ICD-10 codes
What is the ICD-10 code for acute lymphangitis?
- L03.91 — Acute lymphangitis, unspecified. More specific codes apply when the documentation supports them: L03.321, L03.12, L03.322, L03.327 and others below.
What is the ICD-10 code for abdominal wall acute lymphangitis?
- L03.321 — Acute lymphangitis of abdominal wall.
What is the ICD-10 code for axilla acute lymphangitis?
- L03.12 — Acute lymphangitis of other parts of limb (header code; choose a more specific subcode).
What is the ICD-10 code for back acute lymphangitis?
- L03.322 — Acute lymphangitis of back [any part except buttock and flank].
What is the ICD-10 code for buttock acute lymphangitis?
- L03.327 — Acute lymphangitis of buttock.
What is the ICD-10 code for cervical acute lymphangitis?
- L03.222 — Acute lymphangitis of neck.
What is the ICD-10 code for cheek acute lymphangitis?
- L03.212 — Acute lymphangitis of face.
Is L03.91 billable?
- Yes. L03.91 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can L03.91 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict L03.91 as a principal diagnosis.
Is L03.91 a CC or MCC?
- L03.91 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.