H40.1190 vs H40.1191
H40.1190 (Primary open-angle glaucoma, unspecified eye, stage unspecified) compared with H40.1191 (Primary open-angle glaucoma, unspecified eye, mild stage), from the official CMS tabular data.
Summary
No tabular note links these codes. Both belong to category H40, and nothing in the tabular list prevents reporting each when it is documented.
Registry fact- What is different?
Title wording.The titles share “Primary open-angle glaucoma, unspecified eye”; H40.1190 says “stage unspecified” where H40.1191 says “mild stage”.
Registry fact
- Can these codes be reported together?
No instruction prevents it.No note in either entry names the other. Both belong to category H40; each may be reported when its own documentation is present.
Registry fact
- Is there an Excludes1 relationship?
None.Neither entry carries an Excludes1 note that names the other code. H40.1190 carries 3 Excludes1 notes and H40.1191 carries 3 Excludes1 notes covering other codes; the side-by-side table quotes them.
Official rule
- Is there an Excludes2 relationship?
None.Neither entry carries an Excludes2 note that names the other code.
Official rule
- Is one more specific?
No.Both titles are unspecified forms within category H40, and neither is a subdivision of the other.
Registry fact
- Is one a parent or header code?
No.Both are billable codes, and neither contains the other.
Registry fact
- Are there sequencing instructions?
None.Neither entry carries a Code First or Use Additional Code note that names the other.
Official rule
- Are there other coding relationships?
None found.No laterality, encounter-phase, Table of Neoplasms, Table of Drugs and Chemicals, or history-versus-active-disease relationship links these codes.
MedCoder-derived
Official rule: a tabular instructional note or a section of the ICD-10-CM Official Guidelines, quoted as published. Registry fact: the codes’ own published attributes (titles, billable status, position in the hierarchy, code set). MedCoder-derived: a reading MedCoder computes from those facts; it is not itself a rule. How to read the labels
Can these codes be reported together?
Yes, when each is documented. H40.1190 and H40.1191 both belong to category H40.
No Excludes1/Excludes2 relationship exists between these codes in the official tabular list. The code titles state what each one covers, and the documentation decides which applies.
Side by side
| H40.1190Primary open-angle glaucoma, unspecified eye, stage unspecified | H40.1191Primary open-angle glaucoma, unspecified eye, mild stage | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) | H00-H59 — Diseases of the Eye and Adnexa (H00-H59) |
| Definition | Primary open-angle glaucoma, unspecified eye, stage unspecified is a billable ICD-10-CM diagnosis code (H40.1190). | Primary open-angle glaucoma, unspecified eye, mild stage is a billable ICD-10-CM diagnosis code (H40.1191). |
| 7th character | One of the following 7th characters is to be assigned to each code in subcategory H40.11 to designate the stage of glaucoma | One of the following 7th characters is to be assigned to each code in subcategory H40.11 to designate the stage of glaucoma |
| Excludes1 | absolute glaucoma (H44.51-) congenital glaucoma (Q15.0) traumatic glaucoma due to birth injury (P15.3) | absolute glaucoma (H44.51-) congenital glaucoma (Q15.0) traumatic glaucoma due to birth injury (P15.3) |
Notes are the code’s own tabular entry, quoted as published. A note that names the other code is the one the verdict above rests on.
Derived from the official CMS ICD-10-CM tabular data (FY2027). A coding-rule comparison, not billing advice: payer-specific edits and medical-necessity policy are outside its scope. All data sources