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ICD-10-CM 2027 diagnosis code

I27.8Other specified pulmonary heart diseases

Not billable — use a more specific code

I27.8 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.

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 I27.8

I27.8 is the ICD-10-CM diagnosis code for other specified pulmonary heart diseases. It belongs to category I27 (other pulmonary heart diseases), block I26-I28 (pulmonary heart disease and diseases of pulmonary circulation) and chapter 9 (diseases of the circulatory system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

Within I27, choose I27.8 (Other specified pulmonary heart diseases) only when documentation doesn't support a more specific option: primary pulmonary hypertension (I27.0), Kyphoscoliotic heart disease (I27.1), other secondary pulmonary hypertension (I27.2) and pulmonary heart disease, unspecified (I27.9).

To report this condition, pick the subcode that matches the documentation: I27.81 ((chronic)), I27.82 (embolism), I27.83 (syndrome), I27.84 (circulation) and I27.89 (diseases).

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

Specific codes under I27.8

Notes that apply from higher levels

Instructions written at a parent level also apply to I27.8.

Broader instructions also apply from Chapter 9: Diseases of the circulatory system.

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 I27.8

Is I27.8 billable?

No. I27.8 is a header code. Report one of its more specific subcodes instead.