DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

E08 Diabetes mellitus due to underlying condition

  • Header · not billable
  • Some codes take a 7th character

E08 is not billable. The category heads 86 billable codes in FY2027, grouped under 9 subdivisions.

Index → code

  • Diabetes, diabetic (mellitus) (sugar)due to underlying condition → E08.9
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithcataract → E08.36
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithgangrene → E08.52

Where it sits

  1. Chapter 4 Endocrine, nutritional and metabolic diseases (E00-E89)
  2. E08-E13 Diabetes mellitus (E08-E13)
  3. E08 Diabetes mellitus due to underlying condition
Billable codes
86
Subdivisions
9
CC / MCC codes
1 / 5
HCC V28 codes
86
New FY2027
0
Index entries
62

Codes in E08

  1. E08.0
    Diabetes mellitus due to underlying condition with hyperosmolarity
    Header
  2. E08.00
    Diabetes mellitus due to underlying condition with hyperosmolarity without nonketotic hyperglycemic-hyperosmolar coma (NKHHC)
    BillableMCC36
  3. E08.01
    Diabetes mellitus due to underlying condition with hyperosmolarity with coma
    BillableMCC36
  4. E08.1
    Diabetes mellitus due to underlying condition with ketoacidosis
    Header
  5. E08.10
    Diabetes mellitus due to underlying condition with ketoacidosis without coma
    BillableMCC36
  6. E08.11
    Diabetes mellitus due to underlying condition with ketoacidosis with coma
    BillableMCC36
  7. E08.2
    Diabetes mellitus due to underlying condition with kidney complications
    Header
  8. E08.21
    Diabetes mellitus due to underlying condition with diabetic nephropathy
    Billable37
    Inclusion terms 3

    Inclusion terms

    • Diabetes mellitus due to underlying condition with intercapillary glomerulosclerosis
    • Diabetes mellitus due to underlying condition with intracapillary glomerulonephrosis
    • Diabetes mellitus due to underlying condition with Kimmelstiel-Wilson disease
  9. E08.22
    Diabetes mellitus due to underlying condition with diabetic chronic kidney disease
    Billable37
    Use additional code 1

    Use additional code

    • code to identify stage of chronic kidney disease (N18.1-N18.6) N18.1 N18.6
  10. E08.29
    Diabetes mellitus due to underlying condition with other diabetic kidney complication
    Billable37
    Inclusion terms 1

    Inclusion terms

    • Renal tubular degeneration in diabetes mellitus due to underlying condition
  11. E08.3
    Diabetes mellitus due to underlying condition with ophthalmic complications
    Header
  12. E08.31
    Diabetes mellitus due to underlying condition with unspecified diabetic retinopathy
    Header
  13. E08.311
    Diabetes mellitus due to underlying condition with unspecified diabetic retinopathy with macular edema
    Billable37 298
  14. E08.319
    Diabetes mellitus due to underlying condition with unspecified diabetic retinopathy without macular edema
    Billable37
  15. E08.32
    Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy
    Header
    Inclusion terms 1

    Inclusion terms

    • Diabetes mellitus due to underlying condition with nonproliferative diabetic retinopathy NOS
  16. E08.321
    Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy with macular edema +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  17. E08.329
    Diabetes mellitus due to underlying condition with mild nonproliferative diabetic retinopathy without macular edema +7th: 1 2 3 9
    Needs 7th character37 (all 7th characters)
  18. E08.33
    Diabetes mellitus due to underlying condition with moderate nonproliferative diabetic retinopathy
    Header
  19. E08.331
    Diabetes mellitus due to underlying condition with moderate nonproliferative diabetic retinopathy with macular edema +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  20. E08.339
    Diabetes mellitus due to underlying condition with moderate nonproliferative diabetic retinopathy without macular edema +7th: 1 2 3 9
    Needs 7th character37 (all 7th characters)
  21. E08.34
    Diabetes mellitus due to underlying condition with severe nonproliferative diabetic retinopathy
    Header
  22. E08.341
    Diabetes mellitus due to underlying condition with severe nonproliferative diabetic retinopathy with macular edema +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  23. E08.349
    Diabetes mellitus due to underlying condition with severe nonproliferative diabetic retinopathy without macular edema +7th: 1 2 3 9
    Needs 7th character37 (all 7th characters)
  24. E08.35
    Diabetes mellitus due to underlying condition with proliferative diabetic retinopathy
    Header
  25. E08.351
    Diabetes mellitus due to underlying condition with proliferative diabetic retinopathy with macular edema +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  26. E08.352
    Diabetes mellitus due to underlying condition with proliferative diabetic retinopathy with traction retinal detachment involving the macula +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  27. E08.353
    Diabetes mellitus due to underlying condition with proliferative diabetic retinopathy with traction retinal detachment not involving the macula +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  28. E08.354
    Diabetes mellitus due to underlying condition with proliferative diabetic retinopathy with combined traction retinal detachment and rhegmatogenous retinal detachment +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  29. E08.355
    Diabetes mellitus due to underlying condition with stable proliferative diabetic retinopathy +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  30. E08.359
    Diabetes mellitus due to underlying condition with proliferative diabetic retinopathy without macular edema +7th: 1 2 3 9
    Needs 7th character37 298 (all 7th characters)
  31. E08.36
    Diabetes mellitus due to underlying condition with diabetic cataract
    Billable37
  32. E08.37
    Diabetes mellitus due to underlying condition with diabetic macular edema, resolved following treatment +7th: 1 2 3 9
    Needs 7th character37 (all 7th characters)
  33. E08.39
    Diabetes mellitus due to underlying condition with other diabetic ophthalmic complication
    Billable37
    Use additional code 2

    Use additional code

    • code to identify manifestation, such as:
    • diabetic glaucoma (H40-H42) H40 H42
  34. E08.4
    Diabetes mellitus due to underlying condition with neurological complications
    Header
  35. E08.40
    Diabetes mellitus due to underlying condition with diabetic neuropathy, unspecified
    Billable37
  36. E08.41
    Diabetes mellitus due to underlying condition with diabetic mononeuropathy
    Billable37
  37. E08.42
    Diabetes mellitus due to underlying condition with diabetic polyneuropathy
    Billable37
    Inclusion terms 1

    Inclusion terms

    • Diabetes mellitus due to underlying condition with diabetic neuralgia
  38. E08.43
    Diabetes mellitus due to underlying condition with diabetic autonomic (poly)neuropathy
    Billable37
    Inclusion terms 1

    Inclusion terms

    • Diabetes mellitus due to underlying condition with diabetic gastroparesis
  39. E08.44
    Diabetes mellitus due to underlying condition with diabetic amyotrophy
    Billable37
  40. E08.49
    Diabetes mellitus due to underlying condition with other diabetic neurological complication
    Billable37
  41. E08.5
    Diabetes mellitus due to underlying condition with circulatory complications
    Header
  42. E08.51
    Diabetes mellitus due to underlying condition with diabetic peripheral angiopathy without gangrene
    Billable37
  43. E08.52
    Diabetes mellitus due to underlying condition with diabetic peripheral angiopathy with gangrene
    BillableCC37 263
    Inclusion terms 1

    Inclusion terms

    • Diabetes mellitus due to underlying condition with diabetic gangrene
  44. E08.59
    Diabetes mellitus due to underlying condition with other circulatory complications
    Billable37
  45. E08.6
    Diabetes mellitus due to underlying condition with other specified complications
    Header
  46. E08.61
    Diabetes mellitus due to underlying condition with diabetic arthropathy
    Header
  47. E08.610
    Diabetes mellitus due to underlying condition with diabetic neuropathic arthropathy
    Billable37
    Inclusion terms 1

    Inclusion terms

    • Diabetes mellitus due to underlying condition with Charcôt's joints
  48. E08.618
    Diabetes mellitus due to underlying condition with other diabetic arthropathy
    Billable37
  49. E08.62
    Diabetes mellitus due to underlying condition with skin complications
    Header
  50. E08.620
    Diabetes mellitus due to underlying condition with diabetic dermatitis
    Billable37
    Inclusion terms 1

    Inclusion terms

    • Diabetes mellitus due to underlying condition with diabetic necrobiosis lipoidica
  51. E08.621
    Diabetes mellitus due to underlying condition with foot ulcer
    Billable37 383
    Use additional code 1

    Use additional code

    • code to identify site of ulcer (L97.4-, L97.5-) L97.4 L97.5
  52. E08.622
    Diabetes mellitus due to underlying condition with other skin ulcer
    Billable37 383
    Use additional code 1

    Use additional code

  53. E08.628
    Diabetes mellitus due to underlying condition with other skin complications
    Billable37
  54. E08.63
    Diabetes mellitus due to underlying condition with oral complications
    Header
  55. E08.630
    Diabetes mellitus due to underlying condition with periodontal disease
    Billable37
  56. E08.638
    Diabetes mellitus due to underlying condition with other oral complications
    Billable37
  57. E08.64
    Diabetes mellitus due to underlying condition with hypoglycemia
    Header
    Use additional code 1

    Use additional code

    • code for hypoglycemia level, if applicable (E16.A-) E16.A
  58. E08.641
    Diabetes mellitus due to underlying condition with hypoglycemia with coma
    BillableMCC36
  59. E08.649
    Diabetes mellitus due to underlying condition with hypoglycemia without coma
    Billable38
  60. E08.65
    Diabetes mellitus due to underlying condition with hyperglycemia
    Billable38
  61. E08.69
    Diabetes mellitus due to underlying condition with other specified complication
    Billable37
    Use additional code 1

    Use additional code

    • code to identify complication
  62. E08.8
    Diabetes mellitus due to underlying condition with unspecified complications
    Billable38
  63. E08.9
    Diabetes mellitus due to underlying condition without complications
    Billable38

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. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

At E08

Excludes1

  • drug or chemical induced diabetes mellitus (E09.-) E09
  • gestational diabetes (O24.4-) O24.4
  • neonatal diabetes mellitus (P70.2) P70.2
  • postpancreatectomy diabetes mellitus (E13.-) E13
  • postprocedural diabetes mellitus (E13.-) E13
  • secondary diabetes mellitus NEC (E13.-) E13
  • type 1 diabetes mellitus (E10.-) E10
  • type 2 diabetes mellitus (E11.-) E11

Code first

  • the underlying condition, such as:
  • congenital rubella (P35.0) P35.0
  • Cushing's syndrome (E24.-) E24
  • cystic fibrosis (E84.-) E84
  • malignant neoplasm (C00-C96) C00 C96
  • malnutrition (E40-E46) E40 E46
  • pancreatitis and other diseases of the pancreas (K85-K86.-) K85 K86

Use additional code

  • code to identify control using:
  • injectable non-insulin antidiabetic drugs (Z79.85) Z79.85
  • insulin (Z79.4) Z79.4
  • oral antidiabetic drugs (Z79.84) Z79.84
  • oral hypoglycemic drugs (Z79.84) Z79.84

Notes that also apply

Chapter 4 instructions (Notes 1, Excludes1 1): printed on the chapter 4 page.

7th characters

7th characters for E08.32 defined at E08.32

One of the following 7th characters is to be assigned to codes in subcategory E08.32 to designate laterality of the disease:

7th characters for E08.32
7thMeaning (NCHS)
1right eye
2left eye
3bilateral
9unspecified eye

7th characters for E08.33 defined at E08.33

One of the following 7th characters is to be assigned to codes in subcategory E08.33 to designate laterality of the disease:

7th characters for E08.33
7thMeaning (NCHS)
1right eye
2left eye
3bilateral
9unspecified eye

7th characters for E08.34 defined at E08.34

One of the following 7th characters is to be assigned to codes in subcategory E08.34 to designate laterality of the disease:

7th characters for E08.34
7thMeaning (NCHS)
1right eye
2left eye
3bilateral
9unspecified eye

7th characters for E08.35 defined at E08.35

One of the following 7th characters is to be assigned to codes in subcategory E08.35 to designate laterality of the disease:

7th characters for E08.35
7thMeaning (NCHS)
1right eye
2left eye
3bilateral
9unspecified eye

7th characters for E08.37 defined at E08.37

One of the following 7th characters is to be assigned to code E08.37 to designate laterality of the disease:

7th characters for E08.37
7thMeaning (NCHS)
1right eye
2left eye
3bilateral
9unspecified eye

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Index entries

  • Diabetes, diabetic (mellitus) (sugar)due to underlying condition → E08.9
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithhyperosmolarity → E08.00
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithketoacidosis → E08.10
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithglomerulonephrosis, intracapillary → E08.21
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithglomerulosclerosis, intercapillary → E08.21
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithKimmelstiel-Wilson disease → E08.21
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithnephropathy → E08.21
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithchronic kidney disease → E08.22
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithkidney complications NEC → E08.29
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithrenal complication NEC → E08.29
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithrenal tubular degeneration → E08.29
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithretinopathy → E08.319
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithcataract → E08.36
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithophthalmic complication NEC → E08.39
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithretinal, hemorrhage → E08.39
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithneuropathy → E08.40
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithmononeuropathy → E08.41
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithneuralgia → E08.42
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithpolyneuropathy → E08.42
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithautonomic (poly)neuropathy → E08.43
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithgastroparalysis → E08.43
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithgastroparesis → E08.43
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithamyotrophy → E08.44
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithmyasthenia → E08.44
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithneurologic complication NEC → E08.49
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithperipheral angiopathy → E08.51
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithgangrene → E08.52
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithcirculatory complication NEC → E08.59
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithCharcot's joints → E08.610
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithneuropathic arthropathy → E08.610
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwitharthropathy NEC → E08.618
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithdermatitis → E08.620
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithnecrobiosis lipoidica → E08.620
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithfoot ulcer → E08.621
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithskin ulcer NEC → E08.622
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithskin complication NEC → E08.628
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithperiodontal disease → E08.630
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithoral complication NEC → E08.638
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithhypoglycemia → E08.649
  • Diabetes, diabetic (mellitus) (sugar)due to underlying conditionwithhyperglycemia → E08.65

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

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy