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ICD-10-CM 2027 diagnosis code

K45.8Other specified abdominal hernia without obstruction or gangrene

✓ Billable / specific

K45.8 is a valid, billable ICD-10-CM code for other specified abdominal hernia without obstruction or gangrene. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Oth abdominal hernia without obstruction or gangrene

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 K45.8

K45.8 is the ICD-10-CM diagnosis code for other specified abdominal hernia without obstruction or gangrene. It belongs to category K45 (other abdominal hernia), block K40-K46 (hernia) and chapter 11 (diseases of the digestive system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within K45, choose K45.8 (without obstruction or gangrene) only when documentation doesn't support a more specific option: with obstruction, without gangrene (K45.0) and with gangrene (K45.1).

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 393 (Other Digestive System Diagnoses with MCC, relative weight 1.5881), DRG 394 (Other Digestive System Diagnoses with CC, relative weight 0.9228) and DRG 395 (Other Digestive System Diagnoses without CC/MCC, relative weight 0.6382), in MDC 06 (Diseases and Disorders of the Digestive System), 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 553.8 (hernia of other specified sites without mention of obstruction or gangrene).

Notes that apply from higher levels

Instructions written at a parent level also apply to K45.8.

› From K45 Other abdominal hernia
Includes
  • abdominal hernia, specified site NEC
  • lumbar hernia
  • obturator hernia
  • pudendal hernia
  • retroperitoneal hernia
  • sciatic hernia

Broader instructions also apply from K40-K46 Hernia and Chapter 11: Diseases of the digestive system.

Alphabetic index entries

1 entries

Terms in the official ICD-10-CM index that lead to K45.8.

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.

ICD-9-CM equivalent

Converter →
  • 553.8Hernia of other specified sites without mention of obstruction or gangreneexact

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 K45.8

Is K45.8 billable?

Yes. K45.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can K45.8 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict K45.8 as a principal diagnosis.

Is K45.8 a CC or MCC?

No. K45.8 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does K45.8 group to?

K45.8 is used in the MS-DRG v44.0 logic for MS-DRG 393 (Other Digestive System Diagnoses with MCC), MS-DRG 394 (Other Digestive System Diagnoses with CC) and MS-DRG 395 (Other Digestive System Diagnoses without CC/MCC). 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 K45.8?

The CMS General Equivalence Mappings map K45.8 to ICD-9-CM 553.8.