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ICD-10-CM 2027 diagnosis code

H02.59Other disorders affecting eyelid function

✓ Billable / specific

H02.59 is a valid, billable ICD-10-CM code for other disorders affecting eyelid function. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.

Looking up by condition? See ICD-10 code for Blepharoclonus.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About H02.59

H02.59 is the ICD-10-CM diagnosis code for other disorders affecting eyelid function. It belongs to category H02 (other disorders of eyelid), block H00-H05 (disorders of eyelid, lacrimal system and orbit) and chapter 7 (diseases of the eye and adnexa). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within H02.5, choose H02.59 (Other disorders affecting eyelid function) only when documentation doesn't support a more specific option: abnormal innervation syndrome (H02.51), Blepharophimosis (H02.52) and eyelid retraction (H02.53).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 123 (Neurological Eye Disorders, relative weight 0.822), in MDC 02 (Diseases and Disorders of the Eye), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 374.44 (sensory disorders of eyelid) and 374.45 (other sensorimotor disorders of eyelid).

Coding notes

Applicable toConditions and synonyms classified to this code
  • Deficient blink reflex
  • Sensory disorders

Notes that apply from higher levels

Instructions written at a parent level also apply to H02.59.

› From H02.5 Other disorders affecting eyelid function
Excludes2
› From H02 Other disorders of eyelid
Excludes1

Broader instructions also apply from H00-H05 Disorders of eyelid, lacrimal system and orbit and Chapter 7: Diseases of the eye and adnexa.

Alphabetic index entries

3 entries

Terms in the official ICD-10-CM index that lead to H02.59.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 02 · Diseases and Disorders of the Eye

ICD-9-CM equivalent

Converter →
  • 374.44Sensory disorders of eyelidapproximate
  • 374.45Other sensorimotor disorders of eyelidapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about H02.59

Is H02.59 billable?

Yes. H02.59 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can H02.59 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict H02.59 as a principal diagnosis.

Is H02.59 a CC or MCC?

No. H02.59 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does H02.59 group to?

H02.59 is used in the MS-DRG v44.0 logic for MS-DRG 123 (Neurological Eye Disorders). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for H02.59?

The CMS General Equivalence Mappings map H02.59 to ICD-9-CM 374.44 and 374.45.