DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

H21 Other disorders of iris and ciliary body

  • Header · not billable

H21 is not billable. The category heads 97 billable codes in FY2027, grouped under 8 subdivisions.

Index → code

Where it sits

  1. Chapter 7 Diseases of the eye and adnexa (H00-H59)
  2. H15-H22 Disorders of sclera, cornea, iris and ciliary body (H15-H22)
  3. H21 Other disorders of iris and ciliary body
Billable codes
97
Subdivisions
8
CC / MCC codes
4 / 0
HCC V28 codes
0
New FY2027
0
Index entries
49

Codes in H21

  1. H21.0
    Hyphema
    Header
    Excludes1 1

    Excludes1

    • traumatic hyphema (S05.1-) S05.1
  2. H21.00
    Hyphema, unspecified eye
    Billable
  3. H21.01
    Hyphema, right eye
    Billable
  4. H21.02
    Hyphema, left eye
    Billable
  5. H21.03
    Hyphema, bilateral
    Billable
  6. H21.1
    Other vascular disorders of iris and ciliary body
    Header
    Inclusion terms 3

    Inclusion terms

    • Neovascularization of iris or ciliary body
    • Rubeosis iridis
    • Rubeosis of iris
  7. H21.1X
    Other vascular disorders of iris and ciliary body
    Header
  8. H21.1X1
    Other vascular disorders of iris and ciliary body, right eye
    Billable
  9. H21.1X2
    Other vascular disorders of iris and ciliary body, left eye
    Billable
  10. H21.1X3
    Other vascular disorders of iris and ciliary body, bilateral
    Billable
  11. H21.1X9
    Other vascular disorders of iris and ciliary body, unspecified eye
    Billable
  12. H21.2
    Degeneration of iris and ciliary body
    Header
  13. H21.21
    Degeneration of chamber angle
    Header
  14. H21.211
    Degeneration of chamber angle, right eye
    Billable
  15. H21.212
    Degeneration of chamber angle, left eye
    Billable
  16. H21.213
    Degeneration of chamber angle, bilateral
    Billable
  17. H21.219
    Degeneration of chamber angle, unspecified eye
    Billable
  18. H21.22
    Degeneration of ciliary body
    Header
  19. H21.221
    Degeneration of ciliary body, right eye
    Billable
  20. H21.222
    Degeneration of ciliary body, left eye
    Billable
  21. H21.223
    Degeneration of ciliary body, bilateral
    Billable
  22. H21.229
    Degeneration of ciliary body, unspecified eye
    Billable
  23. H21.23
    Degeneration of iris (pigmentary)
    Header
    Inclusion terms 1

    Inclusion terms

    • Translucency of iris
  24. H21.231
    Degeneration of iris (pigmentary), right eye
    Billable
  25. H21.232
    Degeneration of iris (pigmentary), left eye
    Billable
  26. H21.233
    Degeneration of iris (pigmentary), bilateral
    Billable
  27. H21.239
    Degeneration of iris (pigmentary), unspecified eye
    Billable
  28. H21.24
    Degeneration of pupillary margin
    Header
  29. H21.241
    Degeneration of pupillary margin, right eye
    Billable
  30. H21.242
    Degeneration of pupillary margin, left eye
    Billable
  31. H21.243
    Degeneration of pupillary margin, bilateral
    Billable
  32. H21.249
    Degeneration of pupillary margin, unspecified eye
    Billable
  33. H21.25
    Iridoschisis
    Header
  34. H21.251
    Iridoschisis, right eye
    Billable
  35. H21.252
    Iridoschisis, left eye
    Billable
  36. H21.253
    Iridoschisis, bilateral
    Billable
  37. H21.259
    Iridoschisis, unspecified eye
    Billable
  38. H21.26
    Iris atrophy (essential) (progressive)
    Header
  39. H21.261
    Iris atrophy (essential) (progressive), right eye
    Billable
  40. H21.262
    Iris atrophy (essential) (progressive), left eye
    Billable
  41. H21.263
    Iris atrophy (essential) (progressive), bilateral
    Billable
  42. H21.269
    Iris atrophy (essential) (progressive), unspecified eye
    Billable
  43. H21.27
    Miotic pupillary cyst
    Header
  44. H21.271
    Miotic pupillary cyst, right eye
    Billable
  45. H21.272
    Miotic pupillary cyst, left eye
    Billable
  46. H21.273
    Miotic pupillary cyst, bilateral
    Billable
  47. H21.279
    Miotic pupillary cyst, unspecified eye
    Billable
  48. H21.29
    Other iris atrophy
    Billable
  49. H21.3
    Cyst of iris, ciliary body and anterior chamber
    Header
    Excludes2 1

    Excludes2

    • miotic pupillary cyst (H21.27-) H21.27
  50. H21.30
    Idiopathic cysts of iris, ciliary body or anterior chamber
    Header
    Inclusion terms 1

    Inclusion terms

    • Cyst of iris, ciliary body or anterior chamber NOS
  51. H21.301
    Idiopathic cysts of iris, ciliary body or anterior chamber, right eye
    Billable
  52. H21.302
    Idiopathic cysts of iris, ciliary body or anterior chamber, left eye
    Billable
  53. H21.303
    Idiopathic cysts of iris, ciliary body or anterior chamber, bilateral
    Billable
  54. H21.309
    Idiopathic cysts of iris, ciliary body or anterior chamber, unspecified eye
    Billable
  55. H21.31
    Exudative cysts of iris or anterior chamber
    Header
  56. H21.311
    Exudative cysts of iris or anterior chamber, right eye
    Billable
  57. H21.312
    Exudative cysts of iris or anterior chamber, left eye
    Billable
  58. H21.313
    Exudative cysts of iris or anterior chamber, bilateral
    Billable
  59. H21.319
    Exudative cysts of iris or anterior chamber, unspecified eye
    Billable
  60. H21.32
    Implantation cysts of iris, ciliary body or anterior chamber
    Header
  61. H21.321
    Implantation cysts of iris, ciliary body or anterior chamber, right eye
    Billable
  62. H21.322
    Implantation cysts of iris, ciliary body or anterior chamber, left eye
    Billable
  63. H21.323
    Implantation cysts of iris, ciliary body or anterior chamber, bilateral
    Billable
  64. H21.329
    Implantation cysts of iris, ciliary body or anterior chamber, unspecified eye
    Billable
  65. H21.33
    Parasitic cyst of iris, ciliary body or anterior chamber
    Header
  66. H21.331
    Parasitic cyst of iris, ciliary body or anterior chamber, right eye
    BillableCC
  67. H21.332
    Parasitic cyst of iris, ciliary body or anterior chamber, left eye
    BillableCC
  68. H21.333
    Parasitic cyst of iris, ciliary body or anterior chamber, bilateral
    BillableCC
  69. H21.339
    Parasitic cyst of iris, ciliary body or anterior chamber, unspecified eye
    BillableCC
  70. H21.34
    Primary cyst of pars plana
    Header
  71. H21.341
    Primary cyst of pars plana, right eye
    Billable
  72. H21.342
    Primary cyst of pars plana, left eye
    Billable
  73. H21.343
    Primary cyst of pars plana, bilateral
    Billable
  74. H21.349
    Primary cyst of pars plana, unspecified eye
    Billable
  75. H21.35
    Exudative cyst of pars plana
    Header
  76. H21.351
    Exudative cyst of pars plana, right eye
    Billable
  77. H21.352
    Exudative cyst of pars plana, left eye
    Billable
  78. H21.353
    Exudative cyst of pars plana, bilateral
    Billable
  79. H21.359
    Exudative cyst of pars plana, unspecified eye
    Billable
  80. H21.4
    Pupillary membranes
    Header
    Inclusion terms 3, Excludes1 1

    Inclusion terms

    • Iris bombé
    • Pupillary occlusion
    • Pupillary seclusion

    Excludes1

    • congenital pupillary membranes (Q13.8) Q13.8
  81. H21.40
    Pupillary membranes, unspecified eye
    Billable
  82. H21.41
    Pupillary membranes, right eye
    Billable
  83. H21.42
    Pupillary membranes, left eye
    Billable
  84. H21.43
    Pupillary membranes, bilateral
    Billable
  85. H21.5
    Other and unspecified adhesions and disruptions of iris and ciliary body
    Header
    Excludes1 1

    Excludes1

  86. H21.50
    Unspecified adhesions of iris
    Header
    Inclusion terms 1

    Inclusion terms

    • Synechia (iris) NOS
  87. H21.501
    Unspecified adhesions of iris, right eye
    Billable
  88. H21.502
    Unspecified adhesions of iris, left eye
    Billable
  89. H21.503
    Unspecified adhesions of iris, bilateral
    Billable
  90. H21.509
    Unspecified adhesions of iris and ciliary body, unspecified eye
    Billable
  91. H21.51
    Anterior synechiae (iris)
    Header
  92. H21.511
    Anterior synechiae (iris), right eye
    Billable
  93. H21.512
    Anterior synechiae (iris), left eye
    Billable
  94. H21.513
    Anterior synechiae (iris), bilateral
    Billable
  95. H21.519
    Anterior synechiae (iris), unspecified eye
    Billable
  96. H21.52
    Goniosynechiae
    Header
  97. H21.521
    Goniosynechiae, right eye
    Billable
  98. H21.522
    Goniosynechiae, left eye
    Billable
  99. H21.523
    Goniosynechiae, bilateral
    Billable
  100. H21.529
    Goniosynechiae, unspecified eye
    Billable
  101. H21.53
    Iridodialysis
    Header
  102. H21.531
    Iridodialysis, right eye
    Billable
  103. H21.532
    Iridodialysis, left eye
    Billable
  104. H21.533
    Iridodialysis, bilateral
    Billable
  105. H21.539
    Iridodialysis, unspecified eye
    Billable
  106. H21.54
    Posterior synechiae (iris)
    Header
  107. H21.541
    Posterior synechiae (iris), right eye
    Billable
  108. H21.542
    Posterior synechiae (iris), left eye
    Billable
  109. H21.543
    Posterior synechiae (iris), bilateral
    Billable
  110. H21.549
    Posterior synechiae (iris), unspecified eye
    Billable
  111. H21.55
    Recession of chamber angle
    Header
  112. H21.551
    Recession of chamber angle, right eye
    Billable
  113. H21.552
    Recession of chamber angle, left eye
    Billable
  114. H21.553
    Recession of chamber angle, bilateral
    Billable
  115. H21.559
    Recession of chamber angle, unspecified eye
    Billable
  116. H21.56
    Pupillary abnormalities
    Header
    Inclusion terms 3, Excludes1 1

    Inclusion terms

    • Deformed pupil
    • Ectopic pupil
    • Rupture of sphincter, pupil

    Excludes1

    • congenital deformity of pupil (Q13.2-) Q13.2
  117. H21.561
    Pupillary abnormality, right eye
    Billable
  118. H21.562
    Pupillary abnormality, left eye
    Billable
  119. H21.563
    Pupillary abnormality, bilateral
    Billable
  120. H21.569
    Pupillary abnormality, unspecified eye
    Billable
  121. H21.8
    Other specified disorders of iris and ciliary body
    Header
  122. H21.81
    Floppy iris syndrome
    Billable
    Inclusion terms 1, Use additional code 1

    Inclusion terms

    • Intraoperative floppy iris syndrome (IFIS)

    Use additional code

    • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) T36 T50
  123. H21.82
    Plateau iris syndrome (post-iridectomy) (postprocedural)
    Billable
  124. H21.89
    Other specified disorders of iris and ciliary body
    Billable
  125. H21.9
    Unspecified disorder of iris and ciliary body
    Billable

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 H21

Excludes2

  • sympathetic uveitis (H44.1-) H44.1

Notes that also apply

Chapter 7 instructions (Notes 1, Excludes2 11): printed on the chapter 7 page.

Index entries

  • Hyphema → H21.0-
  • Iridoschisis → H21.25-
  • Iridodialysis → H21.53-
  • Plateau iris syndrome (post-iridectomy) (postprocedural) (without glaucoma) → H21.82
  • Iridodonesis → H21.89
  • Degeneration, degenerativechamber angle → H21.21-
  • Degeneration, degenerativeciliary body → H21.22-
  • Degeneration, degenerativeiris (pigmentary) → H21.23-
  • Degeneration, degenerativepupillary margin → H21.24-
  • Atrophy, atrophic (of)iris (essential) (progressive) → H21.26-
  • Cyst (colloid) (mucous) (simple) (retention)pupillary, miotic → H21.27-
  • Cyst (colloid) (mucous) (simple) (retention)iris → H21.309
  • Membrane(s), membranouspupillary → H21.4-
  • Adhesions, adhesive (postinfective)iris → H21.50-
  • Recession, recedingchamber angle (eye) → H21.55-
  • Abnormal, abnormality, abnormalitiespupillary → H21.56-
  • Floppyiris syndrome (intraoperative) (IFIS) → H21.81
  • Syndromeplateau iris (post-iridectomy) (postprocedural) → H21.82
  • Deformityiris (acquired) → H21.89
  • Disruption (of)ciliary body NEC → H21.89
  • Disruption (of)iris NEC → H21.89
  • Ectropioniris → H21.89
  • Ectropionuvea → H21.89
  • Edema, edematous (infectious) (pitting) (toxic)iris → H21.89
  • Retroversion, retrovertediris → H21.89
  • Disease, diseasedaqueous (chamber) → H21.9
  • Disease, diseasedciliary body → H21.9
  • Disease, diseasediris → H21.9
  • Disease, diseaseduveal tract (anterior) → H21.9
  • Disorder (of)iris → H21.9
  • Disorder (of)irisvascular NEC → H21.1X-
  • Atrophy, atrophic (of)iris (essential) (progressive)specified NEC → H21.29
  • Cyst (colloid) (mucous) (simple) (retention)irisidiopathic → H21.30-
  • Cyst (colloid) (mucous) (simple) (retention)irisexudative → H21.31-
  • Cyst (colloid) (mucous) (simple) (retention)irisimplantation → H21.32-
  • Cyst (colloid) (mucous) (simple) (retention)irisparasitic → H21.33-
  • Cyst (colloid) (mucous) (simple) (retention)irispars plana (primary) → H21.34-
  • Adhesions, adhesive (postinfective)irisanterior → H21.51-
  • Adhesions, adhesive (postinfective)irisgoniosynechiae → H21.52-
  • Adhesions, adhesive (postinfective)irisposterior → H21.54-

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

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

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