DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

L03 Cellulitis and acute lymphangitis

  • Header · not billable

L03 is not billable. The category heads 55 billable codes in FY2027, grouped under 6 subdivisions.

Index → code

  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) → L03.90
  • Lymphangitisacute → L03.91
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)flank → L03.31A

Where it sits

  1. Chapter 12 Diseases of the skin and subcutaneous tissue (L00-L99)
  2. L00-L08 Infections of the skin and subcutaneous tissue (L00-L08)
  3. L03 Cellulitis and acute lymphangitis
Billable codes
55
Subdivisions
6
CC / MCC codes
43 / 0
HCC V28 codes
0
New FY2027
0
Index entries
77

Codes in L03

  1. L03.0
    Cellulitis and acute lymphangitis of finger and toe
    Header
    Inclusion terms 4

    Inclusion terms

    • Infection of nail
    • Onychia
    • Paronychia
    • Perionychia
  2. L03.01
    Cellulitis of finger
    Header
    Inclusion terms 2, Excludes1 1

    Inclusion terms

    • Felon
    • Whitlow

    Excludes1

    • herpetic whitlow (B00.89) B00.89
  3. L03.011
    Cellulitis of right finger
    Billable
  4. L03.012
    Cellulitis of left finger
    Billable
  5. L03.019
    Cellulitis of unspecified finger
    Billable
  6. L03.02
    Acute lymphangitis of finger
    Header
    Inclusion terms 1

    Inclusion terms

    • Hangnail with lymphangitis of finger
  7. L03.021
    Acute lymphangitis of right finger
    Billable
  8. L03.022
    Acute lymphangitis of left finger
    Billable
  9. L03.029
    Acute lymphangitis of unspecified finger
    Billable
  10. L03.03
    Cellulitis of toe
    Header
  11. L03.031
    Cellulitis of right toe
    Billable
  12. L03.032
    Cellulitis of left toe
    Billable
  13. L03.039
    Cellulitis of unspecified toe
    Billable
  14. L03.04
    Acute lymphangitis of toe
    Header
    Inclusion terms 1

    Inclusion terms

    • Hangnail with lymphangitis of toe
  15. L03.041
    Acute lymphangitis of right toe
    Billable
  16. L03.042
    Acute lymphangitis of left toe
    Billable
  17. L03.049
    Acute lymphangitis of unspecified toe
    Billable
  18. L03.1
    Cellulitis and acute lymphangitis of other parts of limb
    Header
  19. L03.11
    Cellulitis of other parts of limb
    Header
    Excludes2 3

    Excludes2

    • cellulitis of fingers (L03.01-) L03.01
    • cellulitis of toes (L03.03-) L03.03
    • groin (L03.314) L03.314
  20. L03.111
    Cellulitis of right axilla
    BillableCC
  21. L03.112
    Cellulitis of left axilla
    BillableCC
  22. L03.113
    Cellulitis of right upper limb
    BillableCC
  23. L03.114
    Cellulitis of left upper limb
    BillableCC
  24. L03.115
    Cellulitis of right lower limb
    BillableCC
  25. L03.116
    Cellulitis of left lower limb
    BillableCC
  26. L03.119
    Cellulitis of unspecified part of limb
    BillableCC
  27. L03.12
    Acute lymphangitis of other parts of limb
    Header
    Excludes2 3

    Excludes2

    • acute lymphangitis of fingers (L03.2-) L03.2
    • acute lymphangitis of toes (L03.04-) L03.04
    • acute lymphangitis of groin (L03.324) L03.324
  28. L03.121
    Acute lymphangitis of right axilla
    BillableCC
  29. L03.122
    Acute lymphangitis of left axilla
    BillableCC
  30. L03.123
    Acute lymphangitis of right upper limb
    BillableCC
  31. L03.124
    Acute lymphangitis of left upper limb
    BillableCC
  32. L03.125
    Acute lymphangitis of right lower limb
    BillableCC
  33. L03.126
    Acute lymphangitis of left lower limb
    BillableCC
  34. L03.129
    Acute lymphangitis of unspecified part of limb
    BillableCC
  35. L03.2
    Cellulitis and acute lymphangitis of face and neck
    Header
  36. L03.21
    Cellulitis and acute lymphangitis of face
    Header
  37. L03.211
    Cellulitis of face
    BillableCC
    Excludes2 10

    Excludes2

    • abscess of orbit (H05.01-) H05.01
    • cellulitis of ear (H60.1-) H60.1
    • cellulitis of eyelid (H00.0-) H00.0
    • cellulitis of head (L03.81) L03.81
    • cellulitis of lacrimal apparatus (H04.3) H04.3
    • cellulitis of lip (K13.0) K13.0
    • cellulitis of mouth (K12.2) K12.2
    • cellulitis of nose (internal) (J34.0) J34.0
    • cellulitis of orbit (H05.01-) H05.01
    • cellulitis of scalp (L03.81) L03.81
  38. L03.212
    Acute lymphangitis of face
    BillableCC
  39. L03.213
    Periorbital cellulitis
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Preseptal cellulitis
  40. L03.22
    Cellulitis and acute lymphangitis of neck
    Header
  41. L03.221
    Cellulitis of neck
    BillableCC
  42. L03.222
    Acute lymphangitis of neck
    BillableCC
  43. L03.3
    Cellulitis and acute lymphangitis of trunk
    Header
  44. L03.31
    Cellulitis of trunk
    Header
    Excludes2 6

    Excludes2

    • cellulitis of anal and rectal regions (K61.-) K61
    • cellulitis of breast NOS (N61.0) N61.0
    • cellulitis of female external genital organs (N76.4) N76.4
    • cellulitis of male external genital organs (N48.2, N49.-) N48.2 N49
    • omphalitis of newborn (P38.-) P38
    • puerperal cellulitis of breast (O91.2) O91.2
  45. L03.311
    Cellulitis of abdominal wall
    BillableCC
    Excludes2 2

    Excludes2

    • cellulitis of umbilicus (L03.316) L03.316
    • cellulitis of groin (L03.314) L03.314
  46. L03.312
    Cellulitis of back [any part except buttock and flank] Title revised FY2027
    BillableCC
  47. L03.313
    Cellulitis of chest wall
    BillableCC
  48. L03.314
    Cellulitis of groin
    BillableCC
  49. L03.315
    Cellulitis of perineum
    BillableCC
  50. L03.316
    Cellulitis of umbilicus
    BillableCC
  51. L03.317
    Cellulitis of buttock
    BillableCC
  52. L03.319
    Cellulitis of trunk, unspecified
    BillableCC
  53. L03.31A
    Cellulitis of flank
    BillableCC
  54. L03.32
    Acute lymphangitis of trunk
    Header
  55. L03.321
    Acute lymphangitis of abdominal wall
    BillableCC
  56. L03.322
    Acute lymphangitis of back [any part except buttock and flank] Title revised FY2027
    BillableCC
  57. L03.323
    Acute lymphangitis of chest wall
    BillableCC
  58. L03.324
    Acute lymphangitis of groin
    BillableCC
  59. L03.325
    Acute lymphangitis of perineum
    BillableCC
  60. L03.326
    Acute lymphangitis of umbilicus
    BillableCC
  61. L03.327
    Acute lymphangitis of buttock
    BillableCC
  62. L03.329
    Acute lymphangitis of trunk, unspecified
    BillableCC
  63. L03.32A
    Acute lymphangitis of flank
    BillableCC
  64. L03.8
    Cellulitis and acute lymphangitis of other sites
    Header
  65. L03.81
    Cellulitis of other sites
    Header
  66. L03.811
    Cellulitis of head [any part, except face]
    BillableCC
    Inclusion terms 1, Excludes2 1

    Inclusion terms

    • Cellulitis of scalp

    Excludes2

    • cellulitis of face (L03.211) L03.211
  67. L03.818
    Cellulitis of other sites
    BillableCC
  68. L03.89
    Acute lymphangitis of other sites
    Header
  69. L03.891
    Acute lymphangitis of head [any part, except face]
    BillableCC
  70. L03.898
    Acute lymphangitis of other sites
    BillableCC
  71. L03.9
    Cellulitis and acute lymphangitis, unspecified
    Header
  72. L03.90
    Cellulitis, unspecified
    BillableCC
  73. L03.91
    Acute lymphangitis, unspecified
    BillableCC
    Excludes1 1

    Excludes1

    • lymphangitis NOS (I89.1) I89.1

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At L03

Excludes2

  • cellulitis of anal and rectal region (K61.-) K61
  • cellulitis of external auditory canal (H60.1) H60.1
  • cellulitis of eyelid (H00.0) H00.0
  • cellulitis of female external genital organs (N76.4) N76.4
  • cellulitis of lacrimal apparatus (H04.3) H04.3
  • cellulitis of male external genital organs (N48.2, N49.-) N48.2 N49
  • cellulitis of mouth (K12.2) K12.2
  • cellulitis of nose (J34.0) J34.0
  • eosinophilic cellulitis [Wells] (L98.3) L98.3
  • febrile neutrophilic dermatosis [Sweet] (L98.2) L98.2
  • lymphangitis (chronic) (subacute) (I89.1) I89.1

Notes that also apply

Block L00-L08 instructions (Excludes2 13, Use additional code 1): printed on the block page.

Chapter 12 instructions (Excludes2 10): printed on the chapter 12 page.

Index entries

  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative) → L03.90
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)finger (intrathecal) (periosteal) (subcutaneous) (subcuticular) → L03.01-
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)toe (intrathecal) (periosteal) (subcutaneous) (subcuticular) → L03.03-
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)axilla → L03.11-
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)lower limb → L03.11-
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)upper limb → L03.11-
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)cheek (external) → L03.211
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)face NEC → L03.211
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)jaw (region) → L03.211
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)periorbital → L03.213
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)preseptal → L03.213
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)cervical (meaning neck) → L03.221
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)neck (region) → L03.221
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)abdominal wall → L03.311
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)back (any part except buttock and flank) → L03.312
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)chest wall → L03.313
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)pectoral (region) → L03.313
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)groin → L03.314
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)perineal, perineum → L03.315
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)navel → L03.316
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)umbilicus → L03.316
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)buttock → L03.317
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)gluteal (region) → L03.317
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)trunk → L03.319
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)flank → L03.31A
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)head NEC → L03.811
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)scalp (any part) → L03.811
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)specified site NEC → L03.818
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)chronic → L03.90
  • Cellulitis (diffuse) (phlegmonous) (septic) (suppurative)multiple sites, so stated → L03.90
  • Lymphangitisacute → L03.91
  • Infection, infected, infective (opportunistic)finger (skin)nail → L03.01-
  • Infection, infected, infective (opportunistic)nail (chronic)finger → L03.01-
  • Lymphangitisacutefinger (intrathecal) (periosteal) (subcutaneous) (subcuticular) → L03.02-
  • Infection, infected, infective (opportunistic)nail (chronic)toe → L03.03-
  • Infection, infected, infective (opportunistic)toe (skin)cellulitis → L03.03-
  • Infection, infected, infective (opportunistic)toe (skin)nail → L03.03-
  • Lymphangitisacutetoe (intrathecal) (periosteal) (subcutaneous) (subcuticular) → L03.04-
  • Lymphangitisacuteaxilla → L03.12-
  • Lymphangitisacutelower limb → L03.12-

37 more, longer entries are not listed; the search box finds them by word.

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