Short answer. Substantial entries such as births, marriages, deaths, legal separations, annulments, legitimations, adoptions, and changes of name require a court proceeding. Purely clerical or typographical errors, a first-name change, or the day, month, and sex entry where the error is clerical can instead go through the local civil registrar administratively.
What the law says
Upon good and valid grounds, the following entries in the civil register may be cancelled or corrected: (a) births; (b) marriages; (c) deaths; (d) legal separations; (e) judgments of annulments of marriage; (f) judgments declaring marriages void from the beginning; (g) legitimations; (h) adoptions; (i) acknowledgments of natural children
Rule 108, Section 2 — Entries subject to cancellation or correction. Read the full provision →
The rule lists entries going to the core of civil status
The entries this rule covers concern fundamental facts of a person's civil status: births, marriages, deaths, legal separations, judgments of annulments of marriage, judgments declaring marriages void from the beginning, legitimations, adoptions, and acknowledgments of natural children, among others the rule goes on to list, including citizenship-related entries, civil interdiction, judicial determination of filiation, and changes of name.
Each of these touches something more than a simple typographical slip — they go to who a person legally is, not merely how their name is spelled.
A court order is no longer required for every correction
This is the point where the rule has been overtaken: RA 9048 (2001) and RA 10172 (2012) opened an administrative route through the local civil registrar for clerical or typographical errors, for a change of first name, and for the day and month of birth and the sex entry where the error is clerical in nature. These specific corrections no longer need a court proceeding at all.
Substantial corrections still need the judicial route
Outside that narrow administrative carve-out, substantial corrections still require the judicial proceeding this rule describes. A correction that changes the substance of an entry — not merely fixing an obvious clerical slip — remains a matter for the court, following the procedure this rule sets out for cancelling or correcting entries in the register.
This includes corrections that affect someone's civil status, citizenship, or legitimacy, where the stakes go well beyond fixing a typo.
Why sorting administrative from judicial matters before filing
Someone seeking to fix a civil registry entry should first determine whether the correction is genuinely clerical, or a first-name change, since those can be resolved administratively without a court case at all. Anything beyond that — a substantial correction going to the truth of the underlying fact, such as legitimacy, citizenship, or a substantive change of surname — still needs this judicial proceeding to be resolved properly.